What are head lice?
Head lice are small parasitic insects. Head lice are about the size of a sesame seed and live on the human scalp. They are brownish, tan or gray in color and move by crawling.
Lice do not jump or fly, and do not transmit diseases. They feed on human blood and without it they can't survive. Head lice can only live on human scalps.
- Lice are not known to cause disease.
- Lice infestations are not due to poor hygiene.
- Lice live on people's scalps, not on animals.
» NEXT: How head lice are transmitted
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