Pubic lice, commonly called crabs, are tiny insects found in your genital area. They are a different type of louse from head lice and body lice. Measuring 1/16 inch (1.6 millimeters) or less, pubic lice received their nickname because their bodies resemble tiny crabs.

The most common way to acquire pubic lice is through sexual intercourse. In children, pubic lice may be found in their eyebrows or eyelashes and can be a sign of sexual abuse. However, it may be possible to catch pubic lice after sharing clothing, bed linens or towels with an infested person.

Pubic lice feed on your blood, and their bites can cause severe itching. Treatment includes applying over-the-counter creams and lotions that kill the parasites and their eggs.