191 Sentences With "lightheadedness" | Random Sentence Generator

Lightheadedness, particularly lightheadedness that occurs upon standing, is the cardinal symptom of low blood pressure.

The sergeant started to experience lightheadedness as she drove off.

Those affected have often complained of dizziness, nausea, and lightheadedness.

But she felt feeble and was having waves of lightheadedness.

More severe symptoms include confusion, lightheadedness, dizziness, and rapid heart rate.

Prazosin patients had higher rates of dizziness, lightheadedness and urinary incontinence.

Astronauts newly returned to Earth commonly have episodes of lightheadedness and fainting.

Same for the daily foggy brain, lightheadedness and grumpiness that I experienced.

Mr. Conyers, 88, was hospitalized overnight for dizziness, lightheadedness and shortness of breath.

Other symptoms may include heart palpitations, chest pain, shortness of breath, or lightheadedness.

Other symptoms include fatigue, lightheadedness, feeling faint or passing out, weakness and cognitive impairment.

There was nothing to feel at first, except a lightheadedness—probably nerves, Timmy reasoned.

Signs of dehydration are dry mouth, thirst, dark or no urine, lightheadedness, fatigue, rapid heartbeat.

The feeling can be accompanied by lightheadedness, shortness of breath, fatigue and even chest pain.

The color came back into her face, and she no longer had waves of lightheadedness.

Vomiting, lightheadedness, and the terrifying risk of death are not what most people expect from sex.

In 2000, Hausknecht treated Bush for an irregular heartbeat after the 41st president complained about lightheadedness.

In 2000, Hausknecht treated Bush for an irregular heartbeat after the ex-president complained about lightheadedness.

Dizziness and lightheadedness can also be surprising subtle signs of heart issues in women, Amancharla said.

Those symptoms include severe abdominal pain and blood loss leading to lightheadedness and dangerously low blood pressure.

President Bush was treated by Hausknecht in 2000 for an irregular heartbeat after he complained about lightheadedness.

Patients with POTS are prone to lightheadedness, fainting and experience uncomfortable, rapid increases in their heart rate.

President Bush was treated by Hausknecht in 2000 for an irregular heartbeat after he complained about lightheadedness.

He asked me a barrage of questions about lightheadedness, dizziness, low libido, anxiety, trouble sleeping, and headaches.

Francona has been undergoing tests to determine what has been causing lightheadedness and increasing his heart rate.

But, as you become more dehydrated, you can develop a rapid heart rate, rapid breathing, confusion, and lightheadedness.

People use the word dizziness when referring to lightheadedness, unsteadiness, motion intolerance, imbalance, floating or a tilting sensation.

"[Physical symptoms] range from nausea to lightheadedness, a racing heart, pressure in your chest, and labored breathing," he adds.

Hausknecht treated Bush in February 2000 for an irregular heartbeat after the ex-president complained about lightheadedness while visiting Florida.

As I dunked my head underwater, a lightheadedness came over me, as well as a tingly feeling of well-being.

Breaking out in a cold sweat, or feeling nausea or lightheadedness, may also be warning signs of a heart attack.

The masks, which prevent the lightheadedness and unconsciousness cabin pressure loss can result in, are typically deployed during cabin pressure issues.

Symptoms include rapid heart rate, lightheadedness, difficulty breathing, sleepiness, headache, skin that is pale and nails that are blue or gray.

Alcohol can act as a diuretic, while water will keep you hydrated and keep motion sickness, headaches and lightheadedness at bay.

That next year, while visiting Iceland, medical professionals were once again called when Gunvalson experiencedfeelings of nausea, lightheadedness, weakness and headaches.

"Common symptoms of an allergic reaction can include rash, trouble breathing, frequent cough, vomiting, diarrhea, facial swelling, dizziness, lightheadedness," Schellpfeffer said.

Another common effect of the ketogenic diet is "keto flu": fatigue, lightheadedness, and dizziness people feel when they greatly reduce their carb intake.

He had heard the expression "seeing stars" used with reference to lightheadedness but he had never understood that it described an actual phenomenon.

There was no mention of disabilities on the pin, said Ms. Barnsley, who has postural tachycardia syndrome, which leads to lightheadedness and seizures.

Frequently, the stress that choking places on the body can cause "difficulty breathing, hoarse voice or cough, difficulty swallowing, headaches, and lightheadedness," Barak says.

Even in small amounts, alcohol can intensify a drug's side effects, causing sleepiness, lightheadedness and inability to concentrate or safely drive or operate machinery.

After you stop taking Ambien, you can have trouble sleeping, nausea, flushing, lightheadedness, uncontrolled crying, vomiting, stomach cramps, panic attacks, nervousness, and stomach-area pain.

FYI ... people with autonomic disorders typically experience fainting, lightheadedness, blood pressure issues and other symptoms due to a problem with the body's autonomic nervous system.

While it can and does affect any part of that system, the most frequent symptoms are profound fatigue, gastrointestinal issues and frequent, almost constant lightheadedness.

I checked out my butt in the mirror as a sugar rush of endorphins surged through my brain—or was that just lightheadedness from standing?

Heart attack symptoms include chest discomfort, discomfort in upper body areas like arms, the neck and the jaw, shortness of breath and cold sweats, nausea and lightheadedness.

But the daily exercise in space, and the extra fluid infusion when then returned, allowed them to proceed with their normal daily activities without lightheadedness or fainting.

At times Russell was apologetic, expressed his desire to fly toward the nearby Olympic Mountains, worried about lightheadedness and expressed shock at his fuel level's rapid decrease.

He walked one and struck out nine in his first appearance since leaving Friday's game after 22 296/222 innings because of lightheadedness and shortness of breath.

As Joseph Stromberg wrote for Vox, low humidity is one of the main things that can make flyers feel dehydrated, and higher altitude pressurization can contribute to lightheadedness.

Women are typically diagnosed with this condition when they've lost 5% of their body weight and have other symptoms related to their vomiting, such as dehydration, lightheadedness, and headaches.

Know when to stop If you experience lightheadedness, dizziness, fatigue, nausea, headaches,difficulty concentrating or any other symptoms that regularly interfere with your daily functioning, you should stop fasting.

American Airlines said in an emailed statement that two passengers and several flight attendants had complained of lightheadedness during the flight on Wednesday, prompting the captain to return to Heathrow Airport near London.

But while they're technically non-toxic, diet products and appetite suppressants still come with a whole slew of negative side effects: digestive issues like gas and bloating, diarrhea, jitters, lightheadedness, and sleep disruption.

In addition to the six people taken to the hospital, a group of other people complaining of minor symptoms, including lightheadedness, feeling faint, and shortness of breath were evaluated and treated at the scene.

All of these names refer to signals being transmitted via the vagus nerve to the heart and blood vessels when a person freaks out (often at the sight of blood), resulting in lightheadedness or fainting.

Some of those heart attack symptoms also can include shortness of breath; lightheadedness; or feeling pain or discomfort in one or both arms, the back, neck, jaw or stomach, according to the American Heart Association.

"My legacy can't be compromised or diminished in any way by what we're going through now," Conyers told a Detroit radio station from a hospital where he'd been taken after complaining of lightheadedness in December 22009.

"It took me a year to come completely off — a year," said Dr. Tom Stockmann, 34, a psychiatrist in East London, who experienced lightheadedness, confusion, vertigo and brain zaps, when he stopped taking Cymbalta after 18 months.

While dry eyes and a scratchy throat may simply be a reaction to low humidity in fire-prone areas, she said, a cough, shortness of breath or lightheadedness could also be a symptom of something more serious.

In recordings of Mr. Russell's remarkable conversation with air traffic controllers, he speaks admiringly of the Olympic Mountains at sunset, complains of lightheadedness and muses about potential prison time if he were to land the plane safely.

"We don't know exactly what caused this all," Ledecky said, "but just feeling the effects of dehydration, loss of appetite, lightheadedness — just a lot of different things, to be honest — it just kind of created a perfect storm."

The symptoms of HVD include shortness of breath; weakness or dizziness; pain, tightness, or discomfort in the chest; fainting or feeling faint; fatigue; rapid or irregular heartbeat; lightheadedness; decrease in exercise capacity; and swollen abdomen or ankles and feet.

Symptoms and numbers The most common warning signs of a heart attack are discomfort (sometimes pain) in the chest; lightheadedness, nausea or vomiting; pain in the jaw, neck or back; discomfort in the arm or shoulder; and shortness of breath.

Knowing the symptoms of a heart attack According to the American Heart Association, warning signs and symptoms besides chest discomfort and shortness of breath include discomfort in other areas of the upper body, breaking out in a cold sweat, nausea or lightheadedness.

If the carotid or vertebral arteries to the brain are involved, patients can have symptoms ranging from something as serious as a stroke to symptoms such as headaches, vertigo or lightheadedness, depending on which vessels are involved and how significant the blockages are.

In most cases, blushing is totally innocuous, but if you experience other kinds of symptoms along with it, like diarrhea, headache, or lightheadedness, then it's definitely a good idea to see your doctor so they can rule out other health conditions, she says.

And in reviewing records from the U.S. Food and Drug Administration (FDA) MAUDE database, the researchers located another 19 patients who suffered serious adverse effects when their pacemakers failed: One died, two suffered cardiac arrest, eight had fainting episodes, two experienced lightheadedness and dizziness, and eight suffered heart failure, difficulty breathing and weakness.

Over the years I have learned to ask the kind of questions that lead me to the motion picture of illness, where snoring and gasping may be a sign of sleep apnea, frequent urination an indication of diabetes or prostate trouble, and palpitations combined with lightheadedness an indication of a common heart arrhythmia such as atrial fibrillation which impacts between 2.7 million and 85033 million people in the U.S., according to the Centers for Disease Control and Prevention.

Some of Shannon's conditions include postural orthostatic tachycardia syndrome (POTS), a condition where changing from sitting or lying down to standing up triggers a sudden, large increase in her heart rate and can lead to lightheadedness and fainting; mast cell activation syndrome (MCAS), an autoimmune disease where mast cells don't function properly and can lead to severe allergic reactions; and hypothyroidism, where her thyroid gland is not producing enough of certain important hormones, which can alter her body's chemical reactions.

The exact cause of low blood pressure is not always clear, Weinburg says, but some common causes include: Side effects from over-the-counter or prescription medications, including drugs used to treat high blood pressure, like diuretics, as well as tricyclic antidepressants and erectile dysfunction drugsPregnancy (often in the first 24 weeks), due to hormonal changes and expansion of the circulatory system Other hormone changes, including issues with the hormone-producing glands in the endocrine system Dehydration, heat exhaustion, or heat stroke In addition, postural or orthostatic hypotension can occur when you quickly rise from a sitting or lying down position, causing a sudden drop in blood pressure and feelings of lightheadedness.

Many people, especially as they age, experience lightheadedness if they arise too quickly from a lying or seated position. Lightheadedness often accompanies the flu, hypoglycaemia, common cold, or allergies. Dizziness could be provoked by the use of antihistamine drugs, like levocetirizine, or by some antibiotics or SSRIs. Nicotine or tobacco products can cause lightheadedness for inexperienced users.

Lightheadedness is a common and typically unpleasant sensation of dizziness or a feeling that one may faint. The sensation of lightheadedness can be short- lived, prolonged, or, rarely, recurring. In addition to dizziness, the individual may feel as though their head is weightless. The individual may also feel as though the room is "spinning" or moving (vertigo) associated with lightheadedness.

Less common side effects were "ocular problems, orthostatic hypotension, muscle twitching, pruritus, vagueness, hallucinations, lightheadedness and dry mouth".

The drop in blood pressure seen in sepsis can cause lightheadedness and is part of the criteria for septic shock.

Most causes of lightheadedness are not serious and either cure themselves quickly, or are easily treated. Keeping a sense of balance requires the brain to process a variety of information received from the eyes, the nervous system, and the inner ears. If the brain is unable to process these signals, such as when the messages are contradictory, or if the sensory systems are improperly functioning, an individual may experience lightheadedness or dizziness. Lightheadedness can also be called presyncope, in contrast with syncope (fainting), particularly in cases of temporary visual field loss (i.e.

Symptoms of squeamishness may include dizziness, lightheadedness, nausea, shaking, and pallor. In extreme instances it can also cause vomiting and fainting.

Potential side effects of tryptophan supplementation include nausea, diarrhea, drowsiness, lightheadedness, headache, dry mouth, blurred vision, sedation, euphoria, and nystagmus (involuntary eye movements).

Side effects reported for trandolapril include nausea, vomiting, diarrhea, headache, dry cough, dizziness or lightheadedness when sitting up or standing, hypotension, or fatigue.

Most episodes will revert spontaneously to a normal sinus rhythm. Symptoms and consequences include palpitations, dizziness, lightheadedness (during shorter episodes), fainting (during longer episodes), and sudden cardiac death.

Treatment for lightheadedness depends on the cause or underlying problem. Treatment may include drinking plenty of water or other fluids (unless the lightheadedness is the result of water intoxication in which case drinking water is quite dangerous). If a sufferer is unable to keep fluids down from nausea or vomiting, they may need intravenous fluid. Sufferers should try eating something sugary and lying down or sitting and reducing the elevation of the head relative to the body (for example, by positioning the head between the knees).

Side effects attributed to propafenone include hypersensitivity reactions, lupus-like syndrome, agranulocytosis, CNS disturbances such as dizziness, lightheadedness, gastrointestinal upset, a metallic taste and bronchospasm. About 20% of patients discontinued the drug due to side effects.

Presyncope is a feeling of lightheadedness or simply feeling faint. Syncope, by contrast, is actually fainting. A circulatory system deficiency, such as low blood pressure, can contribute to a feeling of dizziness when one suddenly stands up.

While a few seconds may not result in problems, longer periods are dangerous. Short periods may occur without symptoms or present with lightheadedness, palpitations, or chest pain. Ventricular tachycardia may result in cardiac arrest and turn into ventricular fibrillation.

PDE5-inhibiting drugs can cause a number of minor side-effects, including headache, lightheadedness, dizziness, flushing, nasal congestion, and changes in vision. In 2011, the Food and Drug Administration (FDA) issued additional guidance on regulations related to cGMP manufacture and packaging.

Hyperventilation syndrome can cause respiratory alkalosis and hypocapnia. This syndrome often involves prominent mouth breathing as well. This causes a cluster of symptoms, including rapid heart beat, dizziness, and lightheadedness, which can trigger panic attacks. Panic attacks may also be caused by substances.

Arrhythmias are abnormalities of the heart rate and rhythm (sometimes felt as palpitations). They can be divided into two broad categories: fast and slow heart rates. Some cause few or minimal symptoms. Others produce more serious symptoms of lightheadedness, dizziness and fainting.

Common side effects include vomiting, constipation, itchiness, lightheadedness, and drowsiness. Serious side effects may include breathing difficulties and addiction. Whether its use in pregnancy is safe is unclear. Care should be used during breastfeeding, as it may result in opiate toxicity in the baby.

Junctional rhythms (if a bradycardia) can cause decreased cardiac output. Therefore, the person may exhibit signs and symptoms similar to other bradycardia such as lightheadedness, dizziness, low blood pressure, and fainting. This rhythm can usually be tolerated if the rate is above 50 beats per minute.

Historically, the term mitral valve prolapse syndrome has been applied to MVP associated with palpitations, atypical precordial pain, dyspnea on exertion, low body mass index, and electrocardiogram abnormalities (ventricular tachycardia), syncope, low blood pressure, headaches, lightheadedness, and other signs suggestive of autonomic nervous system dysfunction (dysautonomia).

It is a calcium channel blocker of the dihydropyridine type. Nifedipine is taken by mouth and comes in fast and slow release formulations. Common side effects include lightheadedness, headache, feeling tired, leg swelling, cough, and shortness of breath. Serious side effects may include low blood pressure and heart failure.

Common side effects of hydrocodone are nausea, vomiting, constipation, drowsiness, dizziness, lightheadedness, anxiety, abnormally happy or sad mood, dry throat, difficulty urinating, rash, itching, and contraction of the pupils. Serious side effects include slowed or irregular breathing and chest tightness.MedlinePlus; Drug Information: Hydrocodone. Last Revised—1 October 2008.

Other artifacts, metals for instance, will be harmed by proximity to deteriorated nitrate material. Such gasses can cause skin, eye, and respiratory irritations. Allergic sensitivity has also been noted, as has dizziness and lightheadedness. A cellulose nitrate negative that has reached the later stages of deterioration; there is no image content remaining.

More seriously there may be lightheadedness, passing out, shortness of breath, or chest pain. While most types of arrhythmia are not serious, some predispose a person to complications such as stroke or heart failure. Others may result in cardiac arrest. There are four main types of arrhythmia: extra beats, supraventricular tachycardias, ventricular arrhythmias, and bradyarrhythmias.

Cardiac tamponade, also known as pericardial tamponade, is when fluid in the pericardium (the sac around the heart) builds up, resulting in compression of the heart. Onset may be rapid or gradual. Symptoms typically include those of cardiogenic shock including shortness of breath, weakness, lightheadedness, and cough. Other symptoms may relate to the underlying cause.

Some people with BPH are treated with medications. These include tamsulosin to relax smooth muscles in the bladder neck, and finasteride and dutasteride to decrease prostate enlargement. The drugs only work for mild cases of BPH but also have mild side effects. Some of the medications decrease libido and may cause dizziness, fatigue and lightheadedness.

Uncaria species have had a variety of uses in traditional herbal medicine, such as for lightheadedness, convulsions, numbness, and hypertension. These uses have been associated with the presence of rhynchophylline and have encouraged its investigation as a drug candidate for several cardiovascular and central nervous system diseases; however, few clinically relevant studies have been conducted.

Other simple remedies include avoiding sudden changes in posture when sitting or lying and avoiding bright lights. Several essential electrolytes are excreted when the body perspires. When people are out in unusual or extreme heat for a long time, sweating excessively can cause a lack of some electrolytes, which in turn can cause lightheadedness.

Onset may be rapid (acute) or more gradual (subacute). Signs of cardiac tamponade typically include those of cardiogenic shock including shortness of breath, weakness, lightheadedness, and cough. Other symptoms may relate to the underlying cause. Other general signs of shock (such as fast heart rate, shortness of breath and decreasing level of consciousness) may also occur.

BG less than 70 mg/dl (3.9 mmol/l). Hypoglycemia is a very common occurrence in people with diabetes, usually the result of a mismatch in the balance among insulin, food and physical activity. Symptoms include excess sweating, excessive hunger, fainting, fatigue, lightheadedness and shakiness. Mild cases are self-treated by eating or drinking something high in sugar.

This is due to blood pooling in the legs and, to onlookers, the patient's lower extremities may appear blotchy, pink, or red. Dizziness or lightheadedness are also likely to occur in susceptible patients. Tilt table testing could provoke fainting or syncope. It is the purpose of the test to provoke these symptoms, in order to aid in diagnosis.

In more serious cases, there may be lightheadedness, passing out, shortness of breath or chest pain. While most types of arrhythmia are not serious, some predispose a person to complications such as stroke or heart failure. Others may result in sudden death. There are four main groups of arrhythmia: extra beats, supraventricular tachycardias, ventricular arrhythmias and bradyarrhythmias.

Other mechanisms may also be at work, and some people are physiologically more susceptible to this phenomenon than others. The mechanism for hyperventilation causing Paresthesia, lightheadedness, and fainting is: hyperventilation causes increased blood pH (see Respiratory alkalosis for this mechanism), which causes a decrease in free ionized calcium (Hypocalcaemia), which causes paresthesia and symptoms related to hypocalcaemia.

Wolff–Parkinson–White syndrome (WPWS) is a disorder due to a specific type of problem with the electrical system of the heart which has resulted in symptoms. About 40% of people with the electrical problem never develop symptoms. Symptoms can include an abnormally fast heartbeat, palpitations, shortness of breath, lightheadedness, or syncope. Rarely, cardiac arrest may occur.

Adverse effects are similar to those for other β-lactam antibiotics, including nausea, vomiting, rashes, and antibiotic-associated colitis. Loose bowel movements (diarrhea) may also occur. Rarer adverse effects include mental changes, lightheadedness, insomnia, confusion, anxiety, sensitivity to lights and sounds, and unclear thinking. Immediate medical care is required upon the first signs of these adverse effects.

Dicycloverine, also known as dicyclomine, is a medication that is used to treat spasms of the intestines such as occur in irritable bowel syndrome. It is taken by mouth or by injection into a muscle. While it has been used in baby colic and enterocolitis, evidence does not support these uses. Common side effects include dry mouth, blurry vision, weakness, sleepiness, and lightheadedness.

Orthostatic hypotension, a marked decrease in blood pressure when standing from a supine position, may also occur. Symptoms include lightheadedness upon standing, weakness, and cognitive impairment, and may result in fainting or near-fainting. Orthostasis in anorexia nervosa indicates worsening cardiac function and may indicate a need for hospitalization. Hypotension and orthostasis generally resolve upon recovery to a normal weight.

Supraventricular and ventricular tachycardia is thought to result in palpitations with abrupt onset and abrupt termination. In patients who can terminate their palpitations with a Valsalva maneuver, this is thought to indicate possibly a supraventricular tachycardia. Palpitations associated with chest pain may suggest myocardial ischemia. Lastly, when lightheadedness or syncope accompanies the palpitations, ventricular tachycardia, supraventricular tachycardia, or other arrhythmias should be considered.

The sympathetic response causes peripheral vasoconstriction and increased heart rate. These together act to raise blood pressure back to baseline. Apparently healthy individuals may experience minor symptoms ("lightheadedness", "greying-out") as they stand up if blood pressure is slow to respond to the stress of upright posture. If the blood pressure is not adequately maintained during standing, faints may develop.

Orthostatic hypotension is characterized by symptoms that occur after standing (from lying or sitting), particularly when this is done rapidly. Many report lightheadedness (a feeling that one might be about to faint), sometimes severe. With chronic orthostatic hypotension, the condition and its effects may worsen even as fainting and many other symptoms become less frequent. Generalized weakness or tiredness may also occur.

Ventricular tachycardia (V-tach or VT) is a type of regular, fast heart rate that arises from improper electrical activity in the ventricles of the heart. Although a few seconds may not result in problems, longer periods are dangerous. Short periods may occur without symptoms, or present with lightheadedness, palpitations, or chest pain. Ventricular tachycardia may result in ventricular fibrillation and turn into sudden death.

Angina that changes in intensity, character or frequency is termed unstable. Unstable angina may precede myocardial infarction. In adults who go to the emergency department with an unclear cause of pain, about 30% have pain due to coronary artery disease. Angina, shortness of breath, sweating, nausea or vomiting, and lightheadedness are signs of a heart attack, or myocardial infarction, and immediate emergency medical services are crucial.

Mutations in the MT-TG gene has also been associated with familial hypertrophic cardiomyopathy. Familial hypertrophic cardiomyopathy is a heart condition characterized by thickening of the heart, usually in the interventricular septum. Common phenotypes include chest pain, shortness of breath, physical exertion, palpitations, lightheadedness, dizziness and fainting. A family with a transition mutation of 9997T>C in the MT-TG gene exhibited familial hypertrophic cardiomyopathy.

Isosorbide dinitrate (ISDN) is a medication used for heart failure, esophageal spasms, and to treat and prevent chest pain from not enough blood flow to the heart. It has been found to be particularly useful in heart failure due to systolic dysfunction together with hydralazine. It is taken by mouth or under the tongue. Common side effects include headache, lightheadedness with standing, and blurred vision.

Anaphylaxis ( and φύλαξις (phylaxis) 'protection'.) is a serious allergic reaction that is rapid in onset and may cause death. It typically causes more than one of the following: an itchy rash, throat or tongue swelling, shortness of breath, vomiting, lightheadedness, low blood pressure, and temporary blindness. These symptoms typically come on over minutes to hours. Common causes include insect bites and stings, foods, and medications.

Both medications mentioned above for treatment, oseltamivir and zanamivir, have known side effects, including lightheadedness, chills, nausea, vomiting, loss of appetite, and trouble breathing. Children were reported to be at increased risk of self- injury and confusion after taking oseltamivir. The WHO warned against buying antiviral medications from online sources and estimate that half the drugs sold by online pharmacies without a physical address are counterfeit.

The decreased heart rate can cause a decreased cardiac output resulting in symptoms such as lightheadedness, dizziness, hypotension, vertigo, and syncope. The slow heart rate may also lead to atrial, junctional, or ventricular ectopic rhythms. Bradycardia is not necessarily problematic. People who regularly practice sports may have sinus bradycardia, because their trained hearts can pump enough blood in each contraction to allow a low resting heart rate.

Orthostatic hypotension is characterized by an unusually low blood pressure when the patient is standing up. It can cause dizziness, lightheadedness, headache, blurred or dimmed vision and fainting, because the brain does not get sufficient blood supply. This, in turn, is caused by gravity, pulling the blood into the lower part of the body. Normally, the body compensates, but in the presence of other factors, e.g.

The symptoms of a cerebral contusion depend on the severity of the injury, ranging from minor to severe. Individuals may experience a headache, confusion, sleepiness, dizziness, loss of consciousness, nausea and vomiting, seizures, difficulty with coordination and movement, lightheadedness, tinnitus, and spinning sensations. They may also have difficulty with memory, vision, speech, hearing, managing emotions, and thinking. Signs also depend on the contusion's location in the brain.

Most cases of SNHL present with a gradual deterioration of hearing thresholds occurring over years to decades. In some, the loss may eventually affect large portions of the frequency range. It may be accompanied by other symptoms such as ringing in the ears (tinnitus) and dizziness or lightheadedness (vertigo). The most common kind of sensorineural hearing loss is age-related (presbycusis), followed by noise-induced hearing loss (NIHL).

If an arrhythmia results in a heartbeat that is too fast, too slow or too weak to supply the body's needs, this manifests as a lower blood pressure and may cause lightheadedness or dizziness, or syncope (fainting). Some types of arrhythmia result in cardiac arrest, or sudden death. Medical assessment of the abnormality using an electrocardiogram is one way to diagnose and assess the risk of any given arrhythmia.

Orthostatic hypotension (or postural hypotension) is a drop in blood pressure upon standing. One definition (AAFP) calls for a systolic blood pressure decrease of at least 20 mm Hg or a diastolic blood pressure decrease of at least 10 mm Hg within three minutes of standing. A common first symptom is lightheadedness upon standing, possibly followed by more severe symptoms: narrowing or loss of vision, dizziness, weakness, and even syncope (fainting).

Vasovagal syncope is a form of dysautonomia characterized by an inappropriate drop in blood pressure while in the upright position. Vasovagal syncope occurs as a result of increased activity of the vagus nerve, the mainstay of the parasympathetic nervous system. Patients will feel sudden, unprovoked lightheadedness, sweating, changes in vision, and finally a loss of consciousness. Consciousness will often return rapidly once patient is lying down and the blood pressure returns to normal.

These may appear within 5 minutes post bite, or can be delayed for many hours. Such symptoms include nausea, retching and vomiting, abdominal colic and diarrhoea, incontinence of urine and faeces, sweating, fever, vasoconstriction, tachycardia, lightheadedness, loss of consciousness, blindness, shock, angioedema of the face, lips, gums, tongue, throat and epiglottis, urticaria and bronchospasm. If left untreated, these symptoms may persist or fluctuate for up to 48 hours. In severe cases, cardiovascular failure may occur.

Evidence for familial systemic lactose intolerance syndrome was that vomiting and gastrointestinal symptoms usually appeared two to three hours after meals and that, apparently, Darwin got better when he stopped taking milk or cream. Food intolerance and lactase deficiency may also be confused with food allergies. Symptoms include difficulty swallowing and breathing, nausea, vomiting, diarrhea, and abdominal pain. Upon reaching several other organs in the body, allergens can cause hives, eczema, lightheadedness, weakness, hypotension, etc.

Iron-deficiency anemia may be present without a person experiencing symptoms. If symptomatic, patients may present with the sign of pallor (reduced oxyhemoglobin in skin or mucous membranes), and the symptoms of fatigue, lightheadedness, decreased exercise tolerance, headache, and weakness. None of these symptoms (or any of the others below) are sensitive or specific. The symptom most suggestive of iron deficiency anemia in children is pallor of mucous membranes (primarily the conjunctiva).

Syncope, also known as fainting, is a loss of consciousness and muscle strength characterized by a fast onset, short duration, and spontaneous recovery. It is caused by a decrease in blood flow to the brain, typically from low blood pressure. There are sometimes symptoms before the loss of consciousness such as lightheadedness, sweating, pale skin, blurred vision, nausea, vomiting, or feeling warm. Syncope may also be associated with a short episode of muscle twitching.

The dried leaves and flowers have a mild calming effect when smoked. In some users, the effects have been noted to be similar to the cannabinoid THC found in Cannabis, except that it has a much less potent high. It has also been reported to cause mild euphoria, visual changes, dizziness, nausea, sweating, sedation and lightheadedness. It is sometimes used as a Cannabis substitute by recreational users as an alternative to illegal psychoactive plants.

Aortic dissection (AD) occurs when an injury to the innermost layer of the aorta allows blood to flow between the layers of the aortic wall, forcing the layers apart. In most cases, this is associated with a sudden onset of severe chest or back pain, often described as "tearing" in character. Also, vomiting, sweating, and lightheadedness may occur. Other symptoms may result from decreased blood supply to other organs, such as stroke or mesenteric ischemia.

When someone starts to feel the sensation of being scared or nervous they start to experience anxiety. According to a Harvard Mental Health Letter, "Anxiety usually has physical symptoms that may include a racing heart, a dry mouth, a shaky voice, blushing, trembling, sweating, lightheadedness, and nausea". It triggers the body to activate its sympathetic nervous system. This process takes place when the body releases adrenaline into the blood stream causing a chain of reactions to occur.

The symptoms of a hemothorax depend on the quantity of blood that has been lost into the pleural cavity. A small hemothorax usually causes little in the way of symptoms, while larger hemothoraces commonly cause breathlessness and chest pain, and occasionally lightheadedness. Other symptoms may occur in association with a hemothorax depending on the underlying cause. The clinical signs of a hemothorax include reduced or absent breath sounds and reduced movement of the chest wall on the affected side.

Subclavian steal syndrome arises from retrograde (reversed) flow of blood in the vertebral artery or the internal thoracic artery, due to a proximal stenosis (narrowing) and/or occlusion of the subclavian artery. Symptoms such as syncope, lightheadedness, and paresthesias occur while exercising the arm on the affected side (most commonly the left). Aortic dissection (a tear in the aorta) and cardiomyopathy can also result in syncope. Various medications, such as beta blockers, may cause bradycardia induced syncope.

Relief of obstruction is noted immediately in the majority of appropriately selected patients. Clinical success is defined as a 50% or more reduction in peak gradient across the outflow tract, predicting continued improvement in gradient and cardiac remodeling over the ensuing 1 to 2 years. Over 90% of patients experience a successful procedure, with improvement in outflow tract gradient and mitral regurgitation. Patients typically report progressive reduction in symptoms, including improved shortness of breath, lightheadedness and chest pain.

"Encephalopathy" is a general term describing brain malfunctions and "toxic" asserts that the malfunction is caused by toxins on the brain. The most prominent characteristic of toxic encephalopathy is an altered mental status. Acute intoxication is a reversible symptom of exposure to many synthetic chemical neurotoxicants. Acute intoxication symptoms include lightheadedness, dizziness, headache and nausea, and regular cumulative exposure to these toxic solvents over a number of years puts the individual at high risk for developing toxic encephalopathy.

Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm (arrhythmia) characterized by the rapid and irregular beating of the atrial chambers of the heart. It often begins as short periods of abnormal beating, which become longer or continuous over time. It may also start as other forms of arrhythmia such as atrial flutter that then transform into AF. Often episodes have no symptoms. Occasionally there may be heart palpitations, fainting, lightheadedness, shortness of breath, or chest pain.

Symptoms of nutritional anemia can include fatigue and lack of energy. However if symptoms progress, one may experience shortness of breath, rapid pulse, paleness --especially in the hands, eyelids and fingernails---, swelling of ankles, hair loss, lightheadedness, compulsive and atypical cravings, constipation, depression, muscle twitching, numbness, or burning and chest pain. Those who have nutritional anemia often show little to no symptoms. Often, symptoms can go undetected as mild forms of the anemia have only minor symptoms.

Many psychoactive medications can cause withdrawal symptoms upon discontinuation from administration. Evidence has shown that paroxetine has among the highest incidence rates and severity of withdrawal syndrome of any medication of its class. Common withdrawal symptoms for paroxetine include nausea, dizziness, lightheadedness and vertigo; insomnia, nightmares and vivid dreams; feelings of electricity in the body, as well as rebound depression and anxiety. Liquid formulation of paroxetine is available and allows a very gradual decrease of the dose, which may prevent discontinuation syndrome.

While a fast heart rate caused by low blood pressure is more common, a Bezold–Jarisch reflex has been described in 10% of people, where a slow heart rate is associated with low blood pressure. A drop in blood pressure or shock (either distributive or cardiogenic) may cause the feeling of lightheadedness or loss of consciousness. Rarely very low blood pressure may be the only sign of anaphylaxis. Coronary artery spasm may occur with subsequent myocardial infarction, dysrhythmia, or cardiac arrest.

Drinking water before a triggering experience such as blood donation has been indicated to aid in prevention of a fainting response. Water will increase sympathetic nervous system activation, raising blood pressure and combating vasovagal response. Certain physical maneuvers also have the capacity to temporarily boost blood pressure, alleviating symptoms of pre-syncope like lightheadedness by boosting blood flow to the brain. These include the phobic individual crossing their legs, making tight fists with both hands, or engaging muscles of the trunk or arms.

Orthostatic intolerance (OI) is a disorder of the autonomic nervous system (a subcategory of dysautonomia) characterized by the onset of symptoms upon standing. Symptoms include fatigue, lightheadedness, headache, weakness, increased heart rate/heart palpitations, anxiety, and altered vision. Often, patients have high plasma norepinephrine (NE) concentrations (at least 600 pg/ml) in relation to sympathetic outflow upon standing, suggesting OI is a hyperadrenergic condition. The discovery of identical twin sisters both suffering from OI suggested a genetic basis for the disorder.

Chronic exposure to relatively low levels of carbon monoxide may cause persistent headaches, lightheadedness, depression, confusion, memory loss, nausea, hearing disorders and vomiting. It is unknown whether low-level chronic exposure may cause permanent neurological damage. Typically, upon removal from exposure to carbon monoxide, symptoms usually resolve themselves, unless there has been an episode of severe acute poisoning. However, one case noted permanent memory loss and learning problems after a three-year exposure to relatively low levels of carbon monoxide from a faulty furnace.

This case study specifically is interesting as it strongly suggests an unidentified novel exotoxin, possibly produced by S. zooepidemicus. In 2008, a 59-year-old woman was admitted to the emergency room due to body weakness and lightheadedness when standing, which starting three weeks prior. Over the past couple of days before being emitted she also reported shortness of breath, as well as resting tremors, rhinorrhea, and a chronic cough. She had a vast medicine history including hypertension, diabetes, obesity, chronic kidney failure, and more.

While considered "safety film" as it produces less hazards than nitrate, cellulose acetate still faces stability issues. The deterioration of acetate is autocatalytic just like nitrate: once the deterioration process starts, the degradation products induce further deterioration. If not properly cared for and preserved, cellulose acetate will become acidic, and face many of the same issues that nitrate faces. Deteriorated acetate can also emit a noticeable odor, and can cause the same skin, eye, and respiratory irritations as nitrate does, in addition to dizziness and lightheadedness.

The initial evaluation of early pregnancy bleeding involves a history and physical examination. The relevant history includes determining the gestational age of fetus and characterizing the bleeding. Bleeding that is at least as heavy as menstrual bleeding or associated with clots, tissue, lightheadedness, or pelvic discomfort is associated with increased risks of ectopic pregnancy and spontaneous abortion. Discomfort in the middle of the abdomen is more closely associated with spontaneous abortion; discomfort on a side of the abdomen is more closely associated with ectopic pregnancy.

The ILR is a useful diagnostic tool when patients experience symptoms such as syncope (fainting), seizures, recurrent palpitations, lightheadedness, or dizziness regularly but not often enough to be captured by a 24-hour or 30-day external monitor. Because of the ILR's long battery life (up to 3 years), the heart can be monitored for an extended period. New devices are able to store a total of 60 minutes of recordings on their memory. Thirty minutes is reserved for automatic storage of arrhythmias according preprogrammed criteria.

With mild TBI, the patient may remain conscious or may lose consciousness for a few seconds or minutes. Other symptoms of mild TBI include headache, vomiting, nausea, lack of motor coordination, dizziness, difficulty balancing, lightheadedness, blurred vision or tired eyes, ringing in the ears, bad taste in the mouth, fatigue or lethargy, and changes in sleep patterns. Cognitive and emotional symptoms include behavioral or mood changes, confusion, and trouble with memory, concentration, attention, or thinking. Mild TBI symptoms may also be present in moderate and severe injuries.

Poor perimeter security at a number of airports around the world can make it easier for people to stow away on planes. Stowaways in aircraft wheel wells face numerous health risks, many of which are fatal: being mangled when the undercarriage retracts, tinnitus, deafness, hypothermia, hypoxia, frostbite, acidosis and finally falling when the doors of the compartment reopen. The landing gear compartment is not equipped with heating, pressure or oxygen, which are vital for survival at a high altitude. According to experts, at , hypoxia causes lightheadedness, weakness, vision impairment and tremors.

The use of theophylline is complicated by its interaction with various drugs and by the fact that it has a narrow therapeutic window. Its use must be monitored by direct measurement of serum theophylline levels to avoid toxicity. It can also cause nausea, diarrhea, increase in heart rate, abnormal heart rhythms, and CNS excitation (headaches, insomnia, irritability, dizziness and lightheadedness).MedlinePlus Drug Information: Theophylline THEOPHYLLINE - ORAL 24 HOUR TABLET (Uni-Dur) side effects, medical uses, and drug interactions Seizures can also occur in severe cases of toxicity, and are considered to be a neurological emergency.

Manufacturers note that minoxidil-induced hair loss is a common side effect and describe the process as "shedding". Alcohol and propylene glycol present in some topical preparations may dry the scalp, resulting in dandruff and contact dermatitis. Side effects of oral minoxidil may include swelling of the face and extremities, rapid and irregular heartbeat, lightheadedness, cardiac lesions, and focal necrosis of the papillary muscle and subendocardial areas of the left ventricle. Cases of allergic reactions to minoxidil or the non- active ingredient propylene glycol, which is found in some topical minoxidil formulations, have been reported.

If this condition is present in the body, discomfort will be felt in the chest that is similar to a heavy weight placed on the body. Sweating, shortness of breath, lightheadedness, and irregular heartbeat may also be experienced. If a heart attack occurs, the bulk of the damage is caused during the first six hours, so getting the proper treatment as quickly as possible is important. Some people, especially those who are elderly or have diabetes, may not have typical chest pain but may have many of the other symptoms of a heart attack.

Food allergies in general usually have a fast onset (from seconds to one hour). Symptoms may include: rash, hives, itching of mouth, lips, tongue, throat, eyes, skin, or other areas, swelling of lips, tongue, eyelids, or the whole face, difficulty swallowing, runny or congested nose, hoarse voice, wheezing, shortness of breath, diarrhea, abdominal pain, lightheadedness, fainting, nausea, or vomiting. Symptoms of allergies vary from person to person and may vary from incident to incident. Serious danger regarding allergies can begin when the respiratory tract or blood circulation is affected.

In archaic usage, the vapours (or vapors) is a reference to certain mental or physical states, such as hysteria, mania, clinical depression, bipolar disorder, lightheadedness, fainting, flush, withdrawal syndrome, mood swings, or PMS, where a sufferer lost mental focus. Ascribed primarily to women and thought to be caused by internal emanations (vapours) from the womb, it was related to the concept of female hysteria. The word "vapours" was subsequently used to describe a depressed or hysterical nervous condition. Over 4000 years of history, this disease was considered from two perspectives: scientific and demonological.

Falcon gained media attention after appearing in the 1999 HBO documentary, (filmed by Meema Spadola and Thom Powers) Private Dicks: Men Exposed, in which 25 males were interviewed in the nude about their penises. Rolling Stone published an article in 2003 that reported Falcon's penis as measuring in length when flaccid and in length when erect. When becoming and being erect a large amount of blood flows to his penis and, according to Falcon, causes lightheadedness. In January 2006, Falcon appeared in a documentary by UK Channel 4 called The World's Biggest Penis.

First, recording may be activated automatically according to heart rate ranges previously defined and set in the ILR by the physician. If the heart rate drops below, or rises above, the set rates, the ILR will record without the patient’s knowledge. The second way the ILR records is through a hand-held "patient activator" whereby the patient triggers a recording by pushing a button when they notice symptoms such as skipped beats, lightheadedness or dizziness. The ILR records by "freezing" the electrical information preceding, during and after the symptoms in the format of an electrocardiogram.

If these compensatory mechanisms fail and arterial pressure and blood flow decrease beyond a certain point, the perfusion of the brain becomes critically compromised (i.e., the blood supply is not sufficient), causing lightheadedness, dizziness, weakness or fainting. Usually this failure of compensation is due to disease, or drugs that affect the sympathetic nervous system. A similar effect is observed following the experience of excessive gravitational forces (G-loading), such as routinely experienced by aerobatic or combat pilots 'pulling Gs' where the extreme hydrostatic pressures exceed the ability of the body's compensatory mechanisms.

Acquired long QT syndrome Many people with long QT syndrome have no signs or symptoms. When symptoms occur, they are generally caused by abnormal heart rhythms (arrhythmias), most commonly a form of ventricular tachycardia called Torsades de pointes (TdP). If the arrhythmia reverts to a normal rhythm spontaneously the affected person may experience lightheadedness (known as presyncope) or faint which may be preceded by a fluttering sensation in the chest. If the arrhythmia continues, the affected person may experience a cardiac arrest, which if untreated may lead to sudden death.

However, with BII phobia, a second phase usually follows closely, in which the phobic individual experiences a massive dip in heart rate and blood pressure known as vasovagal response. Stimulation of the vagus nerve, a part of the parasympathetic nervous system, is responsible for promoting the lowered heart rate and decreased blood pressure. These physiological changes limit blood flow to the brain and can promote pre- syncope (lightheadedness, feelings of faintness) and syncope (fainting): categorized in this instance as vasovagal fainting. This second, fainting phase is not common to other phobias.

Hypertension is rarely accompanied by symptoms, and its identification is usually through screening, or when seeking healthcare for an unrelated problem. Some people with high blood pressure report headaches (particularly at the back of the head and in the morning), as well as lightheadedness, vertigo, tinnitus (buzzing or hissing in the ears), altered vision or fainting episodes. These symptoms, however, might be related to associated anxiety rather than the high blood pressure itself. On physical examination, hypertension may be associated with the presence of changes in the optic fundus seen by ophthalmoscopy.

When taken in excess or in combination with other substances, it may also be toxic. While the body adjusts to this medication, it is possible for patients to experience dry mouth, fatigue, lightheadedness, constipation or blurred vision. Some serious but unlikely side effects may be experienced, including mental or mood changes, possible confusion and hallucinations, and difficulty urinating. In a very few cases, very serious but rare side effects may be experienced: irregular heartbeat, yellowing of eyes or skin, fainting, abdominal pain including stomach ache, nausea or vomiting, lack of appetite, seizures, dark urine or loss of coordination.

This leads to an increased heart rate (tachycardia), rapid breathing (hyperventilation) which may be perceived as shortness of breath (dyspnea), and sweating. Because strenuous activity rarely ensues, the hyperventilation leads to a drop in carbon dioxide levels in the lungs and then in the blood. This leads to shifts in blood pH (respiratory alkalosis or hypocapnia), causing compensatory metabolic acidosis activating chemosensing mechanisms which translate this pH shift into autonomic and respiratory responses. Moreover, this hypocapnia and release of adrenaline during a panic attack cause vasoconstriction resulting in slightly less blood flow to the head which causes dizziness and lightheadedness.

Shneerson, John M. (2005) Sleep Medicine: A Guide to Sleep and its Disorders, p 221 People who have nocturnal seizures may notice unusual conditions upon awakening in the morning, such as a headache, having wet the bed, having bitten the tongue, a bone or joint injury, muscle strains or weakness, fatigue, or lightheadedness. Others may notice unusual mental behaviors consistent with the aftermath of a seizure.Atkins, Ringrose. REPORT ON NERVOUS AND MENTAL DISEASE Dublin Journal of Medical Science, Volume 67 Objects near the bed may have been knocked to the floor, or the subject may be surprised to find themselves on the floor.

A complete and detailed history and physical examination are two essential elements of the evaluation of a patient with palpitations. The key components of a detailed history include age of onset, description of the symptoms including rhythm, situations that commonly result in the symptoms, mode of onset (rapid or gradual), duration of symptoms, factors that relieve symptoms (rest, Valsalva), positions and other associated symptoms such as chest pain, lightheadedness or syncope. A patient can tap out the rhythm to help demonstrate if they are not currently experiencing the symptoms. The patient should be questioned regarding all medications, including over-the-counter medications.

Symptoms may include: rash, hives, itching of the mouth, lips, tongue, throat, eyes, skin, or other areas, swelling of lips, tongue, eyelids, or the whole face, difficulty swallowing, runny or congested nose, hoarse voice, wheezing, shortness of breath, diarrhea, abdominal pain, lightheadedness, fainting, nausea and vomiting. Symptoms of allergies vary from person to person and may vary from incident to incident. Serious danger regarding allergies can begin when the respiratory tract or blood circulation is affected. The former can be indicated by wheezing, a blocked airway and cyanosis, the latter by weak pulse, pale skin, and fainting.

DCS may result from inadequate or interrupted pre-oxygenation time, or other factors including the astronaut's level of hydration, physical conditioning, prior injuries and age. Other risks of DCS include inadequate nitrogen purge in the EMU, a strenuous or excessively prolonged EVA, or a loss of suit pressure. Non-EVA crewmembers may also be at risk for DCS if there is a loss of spacecraft cabin pressure. Symptoms of DCS in space may include chest pain, shortness of breath, cough or pain with a deep breath, unusual fatigue, lightheadedness, dizziness, headache, unexplained musculoskeletal pain, tingling or numbness, extremities weakness, or visual abnormalities.

Motion sickness is measured based on the cumulative ratings of all these symptoms without distinguishing different levels for each effect. A Motion Sickness Assessment Questionnaire has been developed to test the multiple dimensions of motion sickness more thoroughly; this survey defines motion sickness as gastrointestinal (involving nausea), peripheral (referring to thermoregulatory effects such as clamminess and sweating), central (involving symptoms such as dizziness and lightheadedness), and sopite-related. This questionnaire may more accurately determine how subjects experience sopite symptoms relative to other motion sickness effects. Another questionnaire designed to measure sleepiness is the Epworth Sleepiness Scale.

Anxiety sensitivity (AS) refers to the fear of behaviours or sensations associated with the experience of anxiety, and a misinterpretation of such sensations as dangerous. Bodily sensations related to anxiety, such as nausea and palpitations, are mistaken as harmful experiences, causing anxiety or fear to intensify. For example, a person with high anxiety sensitivity may fear the shakes as impending neurological disorder, or may suspect lightheadedness is the result of a brain tumour; conversely, a person with low anxiety sensitivity is likely to identify these as harmless and attach no significance to them. The Anxiety Sensitivity Index attempts to assess anxiety sensitivity.

At first, many victims believe they have simply scratched themselves on a sharp stone or shell, although this barely hurts; significant pain begins about 2–3 minutes after being stung. Weever stings cause severe pain; common descriptions from victims are "extremely painful" and "much worse than a wasp (or bee) sting". Common and minor symptoms include severe pain, itching, swelling, heat, redness, numbness, tingling, nausea, vomiting, joint aches, headaches, abdominal cramps, lightheadedness, increased urination, and tremors. Rare and severe symptoms include abnormal heart rhythms, weakness, shortness of breath, seizures, decreased blood pressure, gangrene, tissue degeneration,Branko Šuljić, Sportski ribolov, 2001 and unconsciousness.

Patients receiving prolotherapy injections have reported generally mild side effects, including mild pain and irritation at the injection site (often within 72 hours of the injection), numbness at the injection site, or mild bleeding. Pain from prolotherapy injections is temporary and is often treated with acetaminophen or, in rare cases, opioid medications. NSAIDs are not usually recommended due to their counter action to prolotherapy-induced inflammation, but are occasionally used in patients with pain refractory to other methods of pain control. Theoretical adverse events of prolotherapy injection include lightheadedness, allergic reactions to the agent used, bruising, infection, or nerve damage.

Thus, immediate reactions are described as IgE-mediated. The delayed reactions involve non-IgE-mediated immune mechanisms initiated by B cells, T cells, and other white blood cells. Unlike with IgE reactions, there are no specific biomarker molecules circulating in the blood, and so, confirmation is by removing the suspect food from the diet and see if the symptoms resolve. IgE- mediated symptoms include: rash, hives, itching of the mouth, lips, tongue, throat, eyes, skin, or other areas, swelling of the lips, tongue, eyelids, or the whole face, difficulty swallowing, runny or congested nose, hoarse voice, wheezing, shortness of breath, diarrhea, abdominal pain, lightheadedness, fainting, nausea and vomiting.

A tilt table test (TTT), occasionally called upright tilt testing (UTT), is a medical procedure often used to diagnose dysautonomia or syncope. Patients with symptoms of dizziness or lightheadedness, with or without a loss of consciousness (fainting), suspected to be associated with a drop in blood pressure or positional tachycardia are good candidates for this test. The procedure tests for causes of syncope by attempting to cause syncope by having the patient lie flat on a special table or bed and then be monitored with ECG and a blood pressure monitor which measure continuous, beat to beat, non- invasively. The table then creates a change in posture from lying to standing.

A tilt table test is considered positive if the patient experiences symptoms associated with a drop in blood pressure or cardiac arrhythmia. A normal person's blood pressure will not drop dramatically while standing, because the body will compensate for this posture with a slight increase in heart rate and constriction of the blood vessels in the legs. If this process does not function normally in the patient, the test could provoke signs and symptoms ranging from minor lightheadedness to a very severe cardiac episode, depending on the person. A common side effect during tilt table testing is a feeling of heaviness and warmth in the lower extremities.

The distinguishing characteristics of POIS are: # the rapid onset of symptoms after ejaculation; # the absence of any local genital reaction; and # the presence of an overwhelming systemic reaction. POIS symptoms, which are called a "POIS attack", can include some combination of the following: cognitive dysfunction, aphasia, severe muscle pain throughout the body, severe fatigue, weakness, and flu-like or allergy-like symptoms, such as sneezing, itchy eyes, and nasal irritation. Additional symptoms include headache, dizziness, lightheadedness, sensory and motor problems, intense discomfort, irritability, anxiety, gastrointestinal disturbances, craving for relief, susceptibility to nervous system stresses (e.g. common cold), depressed mood, and difficulty communicating, remembering words, reading and retaining information, concentrating, and socializing.

Progesterone can produce central nervous system depression as an adverse effect, particularly with oral administration or with high doses of progesterone. These side effects may include drowsiness, sedation, sleepiness, fatigue, sluggishness, reduced vigor, dizziness, lightheadedness, confusion, and cognitive, memory, and/or motor impairment. Limited available evidence has shown minimal or no adverse influence on cognition with oral progesterone (100–600 mg), vaginal progesterone (45 mg gel), or progesterone by intramuscular injection (25–200 mg). However, high doses of oral progesterone (300–1200 mg), vaginal progesterone (100–200 mg), and intramuscular progesterone (100–200 mg) have been found to result in dose-dependent fatigue, drowsiness, and decreased vigor.

There is a higher chance of withdrawal reactions if the drug is administered in a higher dosage than recommended, or if a person stops taking the medication altogether without slowly allowing the body to adjust to a lower- dosage regimen. In 1992, Romach and colleagues reported that dose escalation is not a characteristic of long-term alprazolam users and that the majority of long-term alprazolam users change their initial pattern of regular use to one of symptom control only when required. Some common symptoms of alprazolam discontinuation include malaise, weakness, insomnia, tachycardia, lightheadedness, and dizziness. Those taking more than 4 mg per day have an increased potential for dependence.

The muscle weakness of botulism characteristically starts in the muscles supplied by the cranial nerves—a group of twelve nerves that control eye movements, the facial muscles and the muscles controlling chewing and swallowing. Double vision, drooping of both eyelids, loss of facial expression and swallowing problems may therefore occur. In addition to affecting the voluntary muscles, it can also cause disruptions in the autonomic nervous system. This is experienced as a dry mouth and throat (due to decreased production of saliva), postural hypotension (decreased blood pressure on standing, with resultant lightheadedness and risk of blackouts), and eventually constipation (due to decreased forward movement of intestinal contents).

In February 2008, a large amount of publicity was generated for a concert at Madison Square Garden's WaMu Theater in New York City featuring Schmeltzer and Shloime Gertner, under the playbill "The Big Event". On 20 February, a full-page notice was printed in the Hamodia, the most prominent Haredi newpaper. The notice stated that it was "a serious prohibition to attend or perform" at the concert which would lead to "ribaldry and lightheadedness" and added that it was "forbidden to hire these singers to sing at any party, celebration or charity event". Following speculation over whether Schmeltzer would cancel the concert due to the ban, on 26 February it was confirmed that he was canceling his performance.

Over 10% of oral sotalol users experience fatigue, dizziness, lightheadedness, headache, weakness, nausea, shortness of breath, bradycardia (slow heart rate), a sensation of the heart beating too hard, fast, or irregularly, or chest pain. Higher doses of sotalol increase the risk for all of these possible side effects. In rare cases, the QT prolongation caused by sotalol can lead to the development of life-threatening torsade de pointes (TdP) polymorphic ventricular tachycardia. Across several clinical trials, 0.6% of oral sotalol patients with supraventricular abnormal heart rhythms (such as atrial fibrillation) developed TdP. For patients who had a history of sustained ventricular tachycardia (abnormal rhythm lasting more than 30 seconds), 4% developed TdP.

The CDC no longer recommends these interventions, and there is some evidence of patient harm. The CDC guide for the management of CFS states that while there is no cure, a number of methods might improve symptoms. Treatment strategies for sleep problems, pain, (depression, stress, and anxiety) dizziness and lightheadedness (orthostatic Intolerance), and memory and concentration problems are enumerated. Other useful topics mentioned that patients and doctors might discuss include carefully monitoring and managing activity to avoid worsening of symptoms, counseling to cope with the impact the illness may have on quality of life, proper nutrition and nutritional supplements that may support better health, complementary therapies that might help increase energy or decrease pain.

In February 2008, a large amount of publicity was generated for a concert of 9 March at Madison Square Garden's WaMu Theater in New York City featuring Lipa Schmeltzer and Gertner, under the playbill "The Big Event". On 20 February, a full-page notice of a rabbinical ban was printed in the Hamodia newspaper. The notice stated that it was "a serious prohibition to attend or perform" at the concert which would lead to "ribaldry and lightheadedness" and added that it was "forbidden to hire these singers to sing at any party, celebration or charity event". Gertner and Schmeltzer backed out of the concert within days, after 3,000 tickets had been sold.

The first is the "buzz," a brief period of initial responding, where the main effects are lightheadedness or slight dizziness, in addition to possible tingling sensations in the extremities or other parts of the body. The "high" is characterized by feelings of euphoria and exhilaration characterized by mild psychedelia, as well as a sense of disinhibition. If the individual has taken a sufficiently large dose of cannabis, the level of intoxication progresses to the stage of being “stoned,” and the user may feel calm, relaxed, and possibly in a dreamlike state. Sensory reactions may include the feeling of floating, enhanced visual and auditory perception, visual illusions, or the perception of the slowing of time passage, which are somewhat psychedelic in nature.

While atrial flutter can sometimes go unnoticed, its onset is often marked by characteristic sensations of the heart feeling like it is beating too fast or hard. Such sensations usually last until the episode resolves, or until the heart rate is controlled. Atrial flutter is usually well tolerated initially (a high heart rate is for most people just a normal response to exercise), however, people with other underlying heart disease (such as coronary artery disease) or poor exercise tolerance may rapidly develop symptoms, such as shortness of breath, chest pain, lightheadedness or dizziness, nausea and, in some patients, nervousness and feelings of impending doom. Prolonged atrial flutter with fast heart rates may lead to decompensation with loss of normal heart function (heart failure).

Lightheadedness can be simply (and most commonly) an indication of a temporary shortage of blood or oxygen to the brain due to a drop in blood pressure, rapid dehydration from vomiting, diarrhea, or fever. Other causes are: altitude sickness, low blood sugar, hyperventilation, postural orthostatic tachycardia syndrome, panic attacks, and anemia. It can also be a symptom of many other conditions, some of them serious, such as heart problems (including abnormal heart rhythm or heart attack), respiratory problems such as pulmonary hypertension or pulmonary embolism, and also stroke, bleeding, and shock. If any of these serious disorders is present, the individual will usually have additional symptoms such as chest pain, a feeling of a racing heart, loss of speech or change in vision.

Signs and symptoms of CSWS include large amounts of urination (polyuria, defined as over three liters of urine output over 24 hours in an adult), high amounts of sodium in the urine, low blood sodium concentration, excessive thirst (polydipsia), extreme salt cravings, dysfunction of the autonomic nervous system (dysautonomia), and dehydration. Patients often self-medicate by consuming high amounts of sodium and by dramatically increasing their water intake. Advanced symptoms include muscle cramps, lightheadedness, dizziness or vertigo, feelings of anxiety or panic, increased heart rate or slowed heart rate, low blood pressure and orthostatic hypotension which can result in fainting. Other symptoms frequently associated with dysautonomia include headaches, pallor, malaise, facial flushing, constipation or diarrhea, nausea, acid reflux, visual disturbances, numbness, nerve pain, trouble breathing, chest pain, loss of consciousness, and seizures.

The initial stage is the capillary leak phase, lasting from 1 to 3 days, during which up to 70% of total plasma volume may invade cavities especially in the extremities. The most common clinical features are flu-like symptoms such as fatigue; runny nose; lightheadedness up to and including syncope (fainting); limb, abdominal or generalized pain; facial or other edema; dyspnea; and hypotension that results in circulatory shock and potentially in cardiopulmonary collapse and other organ distress or damage. Acute kidney injury or failure is a common risk due to acute tubular necrosis consequent to hypovolemia and rhabdomyolysis. The loss of fluid out of the capillaries has similar effects on the circulation as dehydration, slowing both the flow of oxygen delivered to tissues and organs as well as the output of urine.

The course of HCM is variable. Many people are asymptomatic or mildly symptomatic, and many of those carrying disease genes for HCM do not have clinically detectable disease. The symptoms of HCM include shortness of breath due to stiffening and decreased blood filling of the ventricles, exertional chest pain (sometimes known as angina) due to reduced blood flow to the coronary arteries, uncomfortable awareness of the heart beat (palpitations), as well as disruption of the electrical system running through the abnormal heart muscle, lightheadedness, weakness, fainting and sudden cardiac death. Shortness of breath is largely due to increased stiffness of the left ventricle (LV), which impairs filling of the ventricles, but also leads to elevated pressure in the left ventricle and left atrium, causing back pressure and interstitial congestion in the lungs.

The "pulseless phase" is characterized by vascular insufficiency from intimal narrowing of the vessels manifesting as arm or leg claudication, renal artery stenosis causing hypertension, and neurological manifestations due to decreased blood flow to the brain. Of note is the function of renal artery stenosis in the causation of high blood pressure: Normally perfused kidneys produce a proportionate amount of a substance called renin. Stenosis of the renal arteries causes hypoperfusion (decreased blood flow) of the juxtaglomerular apparatus, resulting in exaggerated secretion of renin, and high blood levels of aldosterone, eventually leading to water and salt retention and high blood pressure. The neurological symptoms of the disease vary depending on the degree; the nature of the blood vessel obstruction; and can range from lightheadedness to seizures (in severe cases).

Possible alt=Possible side effects of nicotine include increased clotting tendency, atherosclerosis, enlargement of the aorta, bronchospasm, muscular tremor and pain, gastrointestinal nausea, dry mouth, dyspepsia, diarrhea, heartburn, peptic ulcer, cancer, lightheadedness, headache, sleep disturbances, abnormal dreams, irritability, dizziness, blood restriction, increased or decreased heart rate, increased blood pressure, tachycardia, more (or less) arrhythmias, coronary artery constriction, coronary artery disease, high insulin, insulin resistance, and risks to child later in life during pregnancy include type 2 diabetes, obesity, hypertension, neurobehavioral defects, respiratory dysfunction, and infertility. The cytotoxicity of e-liquids varies, and contamination with various chemicals have been detected in the liquid. Metal parts of e-cigarettes in contact with the e-liquid can contaminate it with metal particles. Many chemicals including carbonyl compounds such as formaldehyde can inadvertently be produced when the nichrome wire (heating element) that touches the e-liquid is heated and chemically reacted with the liquid.

Thousands of people are stung yearly by C. vittatus while barefoot or accidentally making contact with the scorpion in houses and other man-made structures. While a sting from C. vittatus is very rarely deadly, it is painful and causes localized swelling. Neurotoxins in the venom can also cause paresthesia and muscle spasms, while more severe cases have resulted in a more intense hypersensitive reaction characterized by symptoms such as angioedema, abdominal cramping, chest tightness, flushing, lightheadedness, a large localized reaction, nausea and vomiting, syncope, shortness of breath, urticaria, wheezing, and in the most severe cases, anaphylactic shock. C. vittatus venom contains the toxin CvlV4 that has been shown to target and decrease the inactivation of NA+ channels located in the Dorsal root ganglia of Nociceptors (sensory neurons that detect pain) resulting in an prolonged activation of action potentials Rowe AH, Xiao Y, Scales J, Linse KD, Rowe MP, et al.

Various zolpidem pills The most common adverse effects of short-term use include headache (reported by 7% of people in clinical trials), drowsiness (2%), dizziness (1%), and diarrhea (1%); the most common side effects of long-term use included drowsiness (8%), dizziness (5%), allergy (4%), sinusitis (4%), back pain (3%), diarrhea (3%), drugged feeling (3%), dry mouth (3%), lethargy (3%), sore throat (3%), abdominal pain (2%), constipation (2%), heart palpitations (2%), lightheadedness (2%), rash (2%), abnormal dreams (1%), amnesia (1%), chest pain (1%), depression (1%), flu-like symptoms (1%), and sleep disorder (1%). Zolpidem increases risk of depression, falls and bone fracture, poor driving, suppressed respiration, and has been associated with an increased risk of death. Upper and lower respiratory infections are also common (experienced by between 1 and 10% of people). Residual 'hangover' effects, such as sleepiness and impaired psychomotor and cognitive function, may persist into the day following nighttime administration.

Low-risk cases of vasovagal or orthostatic syncope in younger people with no significant cardiac history, no family history of sudden unexplained death, and a normal EKG and initial evaluation may be candidates for discharge to follow-up with their primary care provider. Recommended acute treatment of vasovagal and orthostatic (hypotension) syncope involves returning blood to the brain by positioning the person on the ground, with legs slightly elevated or sitting leaning forward and the head between the knees for at least 10–15 minutes, preferably in a cool and quiet place. For individuals who have problems with chronic fainting spells, therapy should focus on recognizing the triggers and learning techniques to keep from fainting. At the appearance of warning signs such as lightheadedness, nausea, or cold and clammy skin, counter-pressure maneuvers that involve gripping fingers into a fist, tensing the arms, and crossing the legs or squeezing the thighs together can be used to ward off a fainting spell.