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The Causes of Head Lice
The Causes of Head Lice. Head lice infest the head and neck and attach their eggs to the base of the hair shaft. Head lice are parasites, and they need to feed on.

Nymphs mature after three molts ( , ) and become adults about 7 days after hatching. Adult lice are about the size of sesame seeds. They are hard to see and are often confused for dandruff or hair spray droplets.
Head Lice Infest The Head And Neck And Attach Their Eggs To The Base Of The Hair Shaft.
The adult louse is about the size of a sesame seed, has 6 legs (each with claws), and is tan to. They cannot hop or fly. Head lice are parasites, and they need to feed on.
The Nymph Looks Like An Adult Head Louse, But Is About The Size Of A Pinhead.
Nymphs mature after three molts ( , ) and become adults about 7 days after hatching. Head lice infest the head and neck and attach their eggs to the base of the hair shaft. Adult lice are about the size of sesame seeds.
Nits Are Head Lice Eggs.
Lice and nits are found on or near the scalp, most often at the neckline and behind the ears. They are hard to see and are often confused for dandruff or hair spray droplets. Head lice are tiny insects that live on people's heads.
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