Lice are tiny parasitic insects that feed on blood and are highly contagious through direct contact. Head lice are the most common.
Any of numerous small, flat-bodied, wingless biting or sucking insects of the orders Mallophaga or Anoplura, many of which are external parasites on various animals, including humans. Can include the categories of pubic lice, body lice or head lice. In referring to lice, louse is the singular form, lice is the plural form.
head lice are the most common kind of lice to infect humans. They are sometimes called nits, which is actually the name of the tiny white eggs they hatch from. Further info.
parasites that cause itching.
External skin parasite causing violent scratching, rubbing and general discomfort. Can be treated with louse spray or powder.
(singular louse) any of a large group of small, wingless insects
tiny parasites that can infest the skin; characterized by intense itching.