The disorders include trichotillomania (compulsive hair pulling), dermatillomania (compulsive skin picking, also called excoriation disorder), and onychophagia (compulsive nail biting).

Think people with hair-pulling or skin-picking habits can “just stop”? Science reveals why it’s not about willpower—and what really helps break the cycle.

For more information see Body Dysmorphic Disorder (BDD). Skin picking disorder (excoriation disorder/SPD) causes those who suffer from it to continually rub, touch, scratch or pick at their skin. This ...

which is also known as dermatillomania or excoriation disorder. Tallulah shared pictures of her face, including one where she was noticeably sore and red around her mouth and orbital area ...