Crabs are tiny, black insect-like animals which cling to human hair and can cause itching.
They lay eggs on the pubic hair which appear as tiny white specks. Crabs are transmitted by having close body contact with a person who is infected. Because crabs can survive for some time away from the body, it is also possible to transmit them by sharing towels, clothes or beds. The crabs found in pubic hair differ from those found in the scalp. However, pubic crabs can also be found in beards, armpits on chest hair and eyelashes.