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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 ]
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 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 ...
Knowing how to identify and safely remove them as early as possible can minimize irritation to the scalp. Where do head lice come from? Lauren Salzberg (R), also known as Lice-Lady, treats a ...
head-to-head contact Body louse – Pediculosis Pediculus humanus humanus: skin visual identification under magnification (Vagabond's disease) common worldwide skin-to-skin contact such as sexual activity and via sharing clothing or bedding Crab louse –Phthiriasis: Pthirus pubis: pubic area, eyelashes visual identification under magnification
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.
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