Lice Lice are small parasites that live on humans or animals. They bite through the skin to suck blood. There are three types of lice -- head, body, and pubic lice. Head lice are the most common types. They feed on the scalp and lay their eggs, called nits, at the base of a strand of hair. The nits look like small white ovals and are easiest to see behind the ears and at the back of the neck. Body lice live in the seams of clothing and not on the skin at all. Pubic lice live in the hair around the sex organs and lay their eggs on shafts of hair. Pubic lice can also live in beards and eyebrows, eyelashes, in the armpits and on chest hair. The main symptom of lice is severe itching. The skin may also become red and inflamed. When the louse bites, it injects a toxin into the skin that causes itching and irritation. Head and body lice are spread by contact with an infected person or by sharing combs, towels, sheets, blankets, or clothing. Pubic lice are usually spread by sexual cont
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