Head lice are a common problem that usually affects school-aged children and their families. They can attach to the hair of anyone’s head. It doesn’t matter if the hair is clean or dirty. Head lice are also found worldwide in all different places, such as in homes or schools or the country or city. And it doesn’t matter how clean, dirty, rich, or poor the place or person is.

Though head lice may be a nuisance, they don’t cause serious illness or carry any diseases. Head lice can be treated at home, but it’s important to check with the doctor first.

Here is information from the American Academy of Pediatrics to help parents and caregivers check for, treat, and prevent the spread of head lice.

Head lice are tiny bugs about the size of a sesame seed (2–3 mm long [mm stands for millimeter]). Their bodies are usually...

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