Head lice are small, wingless insects that feed on human blood. They are spread through head-to-head contact or by sharing combs, brushes, or hats. Head lice are not dangerous, but they can be annoying and embarrassing.
It is important to check your head for lice regularly, especially if you have been in close contact with someone who has them. Checking your head for lice is a simple process that can be done at home.