The claws of these three species are adapted to attachment to specific hair diameters. Crab Lice Pubic lice are not known to transmit disease. Adult pubic lice are 1.1–1.8 mm in length. The pubic hair can typically host up to a dozen on average.
|
|
Crab Lice Pubic lice have three forms: the egg (also called a nit), the nymph, and the adult. Nits are lice eggs. They can be hard to see and are found firmly attached to the hair shaft. They are oval and usually yellow to white.
|
|
Pubic lice on eyelashes Infestations of crab lice are known as pediculosis pubis or phthiriasis pubis (which, unlike the generic name of the louse, is spelled with a phth). Infestation of the eyelashes is referred to as pediculosis ciliaris or phthiriasis palpebrarum.Manjunatha NP, Jayamanne GR, Desai SP, Moss TR, Lalik J, Woodland A. Pediculosis pubis: presentation to ophthalmologist as phthriasis palpebrarum associated with corneal epithelial keratitis. Int. J. STD AIDS 2006; 17: 424–426 The main symptom of infestation with crab lice is itching, usually in the pubic-hair area, resulting from hypersensitivity to louse saliva, which can become stronger over two or more weeks following initial infestation.
|
|
Crab lice feed exclusively on blood, and take a blood meal 4–5 times daily. Adults are 1.5–2.0 mm long and flattened. They are much broader in comparison to head and body lice. Adults are found only on the human host and require human blood to survive.
|
|
Upper Saddle River: Pearson Education, Inc. The risk of STIs can be reduced by safe sex practices, such as using condoms. Both partners may opt be tested for STIs before engaging in sex. The exchange of body fluids is not necessary to contract an infestation of crab lice.
|
|
Infestation with crab lice is also called phthiriasis or phthiriasis pubis. The disease (like the name of the order to which the louse belongs, Phthiraptera) is spelled with phth, but the scientific name of the louse, Pthirus pubis, is spelled with pth, despite this being based on a misspelling that was nevertheless fixed as the official spelling in 1958.
|
|
In some infestations, a characteristic grey-blue or slate coloration appears (maculae caeruleae) at the feeding site, which may last for several days. Crab louse egg on human body hair Current worldwide prevalence has been estimated at 2% of the human population, but accurate numbers are difficult to gauge because crab lice infestations are not considered a reportable condition by many governments, and many cases are self-treated or treated discreetly by primary physicians. It has been suggested that an increasing percentage of humans removing their pubic hair has led to reduced crab louse populations in some parts of the world.Bloomberg: Brazilian bikini waxes make crab lice endangered species, published 13 January 2013, retrieved 14 January 2013 Other lice that infest humans are the body louse and the head louse.
|
|
Pubic hair can become infested with pubic lice (also known as crab lice). Adult pubic lice are in length. The pubic hair can usually host up to a dozen on average. Pubic lice are usually found attached to hair in the pubic area but sometimes are found on coarse hair elsewhere on the body (for example, eyebrows, eyelashes, beard, mustache, chest, armpits, etc.).
|
|
Crab lice attach to pubic hair that is thicker than other body hair because their claws are adapted to the specific diameter of pubic hair. Pubic lice infestations (pthiriasis) are usually spread through sexual contact. The crab louse can travel up to 10 inches on the body. Pubic lice infestation is found worldwide and occurs in all races and ethnic groups and in all economic levels.
|
|
"The Crab Lice" was nominated for the 1998 Nebula Award for Best Short Story. "The Truest Chill" was nominated for the 1999 Nebula Award for Best Novelette. "Animae Celestes," was a finalist for the 1999 Sturgeon Award for Best Short Fiction and a preliminary nominee for the 2000 Nebula Award for Best Novelette. "Spirit of the Place" was a preliminary nominee for the 2002 Nebula Award for Best Novella.
|
|
Current worldwide prevalence has been very approximately estimated at two percent of the human population. Accurate numbers are difficult to acquire, because pubic lice infestations are not considered a reportable condition by many governments. Many cases are self-treated or treated discreetly by personal physicians, which further adds to the difficulty of producing accurate statistics.Although any part of the body may be colonized, crab lice favor the hairs of the genital and peri-anal region.
|
|
Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( = short, / = tail), usually hidden entirely under the thorax. They live in all the world's oceans, in fresh water, and on land, are generally covered with a thick exoskeleton, and have a single pair of pincers. Many other animals with similar names – such as hermit crabs, king crabs, porcelain crabs, horseshoe crabs, and crab lice – are not true crabs.
|
|
Pubic lice typically are found attached to hair in the pubic area but sometimes are found on coarse hair elsewhere on the body (for example, eyebrows, eyelashes, beard, mustache, chest, armpits, etc.). They do not generally occur on the finer hair of the scalp. Crab lice attach to pubic hair that is thicker than other body hair because their claws are adapted to the specific diameter of pubic hair. Pubic lice infestations (pthiriasis) are usually spread through sexual contact.
|
|
Both over-the-counter and prescription medications are available for treatment of pubic lice infestations. A lice-killing lotion containing 1% permethrin or a mousse containing pyrethrins and piperonyl butoxide can be used to treat pubic ("crab") lice. These products are usually available over-the-counter without a prescription at a local drug store or pharmacy. These medications are safe and effective when used exactly according to the instructions in the package or on the label.
|
|
Crab lice typically are found attached to hair in the pubic area but sometimes are found on coarse hair elsewhere on the body (for example, eyebrows, eyelashes, beard, mustache, chest, armpits, etc.). Pubic lice infestations (pthiriasis) are spread through direct contact with someone who is infested with the louse. Some STIs like HIV/AIDS can also be contracted by using IV drug needles after their use by an infected person, as well as through childbirth or breastfeeding.
|
|
Water warts of molluscum contagiosum Pubic hair with crab lice Vulvar organs and tissues can become affected by different infectious agents such as bacteria and viruses, or infested by parasites such as lice and mites. Over thirty types of pathogen can be sexually transmitted, and many of these affect the genitals. Most STIs do not produce symptoms or symptoms may be mild and not be indicative of an STI. The practice of safe sex can greatly reduce the risk of infection from many sexually transmitted pathogens.
|
|