Trichotillomania is a disorder that causes people to pull their own hair out. It can be hair from any area of the body. Some people twist their hair until it breaks or pulls out, rather than pulling it out. It is part of a group of disorders called Body Focused Repetitive Behaviours (BFRBs). Other BFRBs include skin picking and nail biting.
Some people with trichotillomania (aka TTM or trich) constantly pull at their hair, while others do it only in response to stressful situations or general anxiety.
Most people first exhibit symptoms of trich before the age of seventeen. The younger the sufferer is, the more easily it is treated as an older patient with trich has most likely had symptoms all their adult life, if not even earlier, and the longer term habits are harder to break.
Treatment is available and the disorder can be defeated. For more information see www.trich.org