What are lice?

A Answers (4)

  • AMichael Roizen, MD, Internal Medicine, answered
    Lice are tiny insects that live on humans and feed on blood, infesting up to ten million schoolchildren a year. Head lice are usually found in hair or on the back of the neck or behind the ears. They spread from one person to another through direct contact or via shared clothing on which lice have laid eggs.
  • AYouBeauty answered
    Lice are parasitic insects that take up residence on our scalp and feast on human blood several times a day. The unhatched eggs they lay are called nits. Nits are about the size of a knot in a piece of thread, while adult lice are roughly the size of a sesame seed. While they are not known to spread disease, there’s no denying they’re a nuisance.
  • AHealthwise answered

    Lice are tiny insects that live on humans and feed on blood. They can't jump or fly, but they can spread easily from one person to another through close contact or shared personal items.

    The main types of lice that live on humans are head lice, pubic lice (crabs), and body lice.

    The main symptom of lice is itching. Scratching affected areas can make the skin raw, and these areas may get infected.

    This information does not replace the advice of a doctor. Healthwise disclaims any warranty or liability for your use of this information. To learn more visit

    © Healthwise, Incorporated.

  • AMehmet Oz, MD, Cardiology (Cardiovascular Disease), answered
    What are lice

    There are three types of lice, depending on where they are found on the body. Learn more on this topic in this video of Dr. Oz.

    Helpful? 1 person found this helpful.
Did You See?  Close
Can head lice jump or fly from one head to another?