Hi i understand your concern. Trichotillomenia is kind of impulse control disorder and can be treated with drug and psychotherapy. In psychotherapy habit reversal technique is useful. you have to resist your impulse as much as possible and when it comes you have to divert it in other thing like clapping, laughing, writing etc. Proper way can be learned by psychiatrist. In drug it can be treated with medicines like fluoxetine and fluoxamine. If you have sever trichotilomenia and visible hair loss then consult both dermatologist for local skin treatment and psychiatrist for impulse control. Happy to help you. If you have query then revert back to me. Thank you. Take care.