By Timothy Huzar Reviewed by Stacy Sampson, DO Dermatophagia is a psychological condition in which a person compulsively bites, chews, gnaws, or eats their skin. It often affects the skin around people’s fingers. Dermatophagia is an emerging concept in mental health research. For this reason, there have been few studies into precisely what it is and how it differs from other conditions. According to...