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Head lice live on the human scalp and feed on human blood. They are 0.09 – 0.1 inches long, wingless, and dorsoventrally flat. Head lice are gray, but some can feature other colors.
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 ]
[16] [17] Normally head lice infest a new host only by close contact between individuals, making social contacts among children and parent child interactions more likely routes of infestation than shared combs, brushes, towels, clothing, beds or closets. Head-to-head contact is by far the most common route of lice transmission.
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 are about 2 to 3 millimeters long, and they usually infest the head or neck and attach their eggs to the base of the hair shaft, according to the CDC.
Head lice feed on blood several times each day and tend to reside close to your scalp, which explains the itchiness and why it’s sometimes so difficult to tell that you have head lice. Unlike ...
Louse (pl.: lice) is the common name for any member of the clade Phthiraptera, which contains nearly 5,000 species of wingless parasitic insects.Phthiraptera has variously been recognized as an order, infraorder, or a parvorder, as a result of developments in phylogenetic research.
Lauren Salzberg (R), also known as Lice-Lady, treats a customer for head lice in her studio, a converted garage, in Potomac, Maryland, in November 2015. - Andrea Barthelemy/DPA/ZUMA Press
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