What You Should Know About. . .
Head lice have claws especially adapted for clinging to hair shafts.
Head lice are rarely found off the head. They are most commonly found in the hair above and behind the ears and near the nape of the neck. The nit is a louse egg which is always glued by the female to the base of the hair shaft, only three to four mm from the scalp. Head lice eggs hatch in seven to nine days into the first nymph stage, which looks like a miniature adult. The nymph takes a blood meal by biting the scalp soon after hatching and continues to feed every three to six hours.