Compulsive hair pulling
Symptoms usually begin before the age of 17. The hair may come out in round patches or across the scalp. The effect is an uneven appearance. The person may pluck other hairy areas, such as the eyebrows, eyelashes, or body hair.
These symptoms are usually seen in children:
A piece of tissue may be removed (biopsy) to rule out other causes, such as a scalp infection, and to explain the hair loss.