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 a