Lice

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Lice

Lice are tiny insects that live on humans and survive by feeding on blood. Although they cannot jump or fly, they spread easily from one person to another through close contact or shared personal items.

Head lice, pubic lice, and body lice are the three main types that live on humans. When a large number of lice collect and reproduce on a person's body, it is called an infestation. Lice can infest people from all races and socioeconomic backgrounds.

The main symptom of lice infestation (pediculosis) is itching in the affected areas. The nits (eggs) of hair and pubic lice may be seen on hair shafts, while nits of body lice are most often found in the seams of clothing. Scratching affected areas can make the skin raw, and these areas may become infected. Bites from pubic lice can cause small bruiselike marks on the torso, thighs, or upper arms.

Treatment usually begins with application of a cream, shampoo, or lotion to kill lice. Prescription and nonprescription medications are both available. Washing clothes and linens in hot water is generally recommended.

Credits

Author	Jeannette Curtis
Author	Caroline Rea, RN, BS, MS
Editor	Kathleen M. Ariss, MS
Editor	Susan Van Houten, RN, BSN, MBA
Associate Editor	Tracy Landauer
Associate Editor	Pat Truman
Primary Medical Reviewer	Patrice Burgess, MD - Family Medicine
Primary Medical Reviewer	Adam Husney, MD - Family Medicine
Primary Medical Reviewer	Kathleen Romito, MD - Family Medicine
Last Updated	May 25, 2007

Last updated:	May 25, 2007
Author:	Caroline Rea, RN, BS, MS
Reviewed By:	Kathleen Romito, MD - Family Medicine
Editors:	Susan Van Houten, RN, BSN, MBA, Pat Truman

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