The louse (plural: lice) is a parasite that attaches itself to human hair and feeds on human blood. The most prevalent kind of lice is head lice. An infestation with head lice is medically known as ...

A cluster of itchy spots on your head, genitals, or elsewhere on your body can result from one of three types of lice. Treatment can involve removing the lice and eggs and laundering fabrics. What are ...