Head lice — Learn more about causes, treatment and prevention of a mature adult louse after nine to 12 days, and an adult lives for three to four weeks. In the United States, cases of head lice most often occur in children.
Head lice are wingless, 2 mm to 4 mm long (adult louse), six legged, blood- sucking In neglected cases with heavy infestations, secondary infection of the.
Nymphs are smaller and become adult lice about 1–2 weeks after they hatch. . In most cases, a child who has lice should stay at school until the end of the day, .
In this scalp infested with head lice, there are 2 scabs from scratching and a few lice eggs (nits) glued to the hair shaft are seen Nits are the egg cases of lice.
Head lice live in your head and feed off the blood from your scalp. A louse is A louse (a single adult) is about the size of a sesame seed.