The boy that you see here, is 11-year-old, with the said disorder. According to his mother
Trichotillomania is actually a form of obsessive-compulsive disorder that arises from boredom or anxiety. By their hair one-by-one, somehow, it gives them the satisfaction and calms their nerves. The act then repeats until it becomes a cycle up to the point that the person will become bald in the end. The boy's mother confess that his son is intelligent and tends to get bored at school.
Management of trichotillomania entails several methods. Primarily, the person needs to receive hair replacement as soon as possible to overcome social stigma. Further social scrutiny can increase the anxiety level of the person and this can just add up to the existing condition. Some authorities believed that instead of hair replacements, a semi-permanent hair piece made of synthetic fibers and woven into a hair piece is the most effective way to provide a positive self-image and minimizes the tendency for future hair-pulling since the hair piece is glued to the scalp. Because of this, the urge to pull hairs can be diverted into other ways. For this boy, he stretches a rubber band.
Overcoming hair-pulling urges may involve a specific type of talk therapy called CBT (cognitive behavioral therapy), medication, or a combination of both. Therapists teach people with trichotillomania special behavior techniques that help them to recognize the urge to pull hair before it becomes too strong to resist (kidshealth.org).