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The body louse (Pediculus humanus humanus, also known as Pediculus humanus corporis) or the cootie is a hematophagic ectoparasite louse that infests humans. [1] It is one of three lice which infest humans, the other two being the head louse, and the crab louse or pubic louse.
Head lice cannot fly, and their short, stumpy legs render them incapable of jumping, or even walking efficiently on flat surfaces. [ 2 ] The non-disease-carrying head louse differs from the related disease-carrying body louse ( Pediculus humanus humanus ) in preferring to attach eggs to scalp hair rather than to clothing.
Head lice infestation, also known as pediculosis capitis, is the infection of the head hair and scalp by the head louse (Pediculus humanus capitis). [6] Itching from lice bites is common. [ 5 ] During a person's first infection, the itch may not develop for up to six weeks. [ 5 ]
Unlike other parasites, lice live outside of your body, explains Brittany Smirnov, DO, a dermatologist in Delray, Florida. ... Head lice feed on blood several times each day and tend to reside ...
Head lice are most common among young children — 6 million to 12 million lice outbreaks occur yearly in children between 3 and 11 in the US — though adults are vulnerable to head lice as well.
Genetic analysis of clothes or body lice, which are one of three lice to live on humans, revealed that humans likely began wearing some form of clothing at least 83,000 years ago, according to a ...