Trichotillomania (TTM) is an impulse control disorder characterised by the repeated urge to pull out scalp hair, eyelashes, nose hair, ear hair, eyebrows or other body hair. It is believed to be related to obsessive-compulsive disorder.
Trichotillomania is repetitive twisting and twirling of the hair. The hair loss is usually in a well-defined area with shortened, broken-off hairs and early regrowth of hair. The scalp is the most commonly involved site, but eyelashes and eyebrows may also be involved. The hair loss can also be patchy and poorly defined.
Most TTM sufferers live relatively normal lives, except for having bald spots on their head. Many clinicians classify TTM as a mental disorder, though the classification is debatable. Some clinicians classify TTM as a form of obsessive-compulsive disorder. Some classify TTM as a form of self-harm. Others say that TTM is no more a mental disorder than is any other habitual behavior, such as nail biting. Many TTM sufferers have relatively normal work and social lives; and TTM sufferers are not any more likely to have significant personality disorders than anyone else.
There have been recent clinical trials of drug treatment for trichotillomania, for example using anafranil, prozac, and lithium. One should use care in choosing a therapist who has specific experience and insight into the condition, lest one be overdiagnosed or overmedicated. Prozac and other similar drugs, which some professionals prescribe on a one-size-fits-all basis, tend to have limited usefulness in treating TTM, and can often have significant side effects.
A practice related to TTM is trichophagia, in which hairs are sucked and/or eaten. In extreme cases, this can lead to the development of a hairball (trichobezoar) in the abdomen, a serious condition in humans.