Trichotillomania

Trichotillomania is characterized by recurrent pulling out of one’s hair for pleasure, gratification, or relief of tension that results in noticeable hair loss. Hair may be pulled from any location, including scalp, eyelashes and eyebrows. Recurrent pulling out of one’s hair results in noticeable hair loss. The sufferer experiences an increasing sense of tension immediately before pulling out the hair or when attempting to resist the behavior. Pleasure, gratification, or relief is experienced when pulling out the hair.

See DSM-IV-TR 312.39 Trichotillomania