Trichotillomania is believed to affect 2-5% of the population and 80-90% of reported cases are women. The average age of onset is 11, however pulling can start at any age. Children under the age of 6 years old usually stop hair pulling after 12 months.
The diagnosis criteria for Trich in the mental health field include a presence of multiple symptoms:
- Hair pulling that results in noticeable hair loss
- Relief and gratification during pulling
- Increased tension when resisting pulling
- Significant impairment in social functions due to pulling