What are Lice? Lice are tiny insects called parasites that spread by personal contact, as well as by sharing belongings. Children are particularly likely to catch and spread lice Types of lice There are three main types of lice. They all come from the same parasite family, but they’re each a different species: You can find head lice on the scalp, neck, and ears. Body lice start out on clothing or in beds, but they move from those locations to people’s skin. Pubic lice are also called “crabs.” Yo