Question: what does it mean when someone bites the skin around their nails?
Answer: Dermatophagia is what's known as a body-focused repetitive behavior (BFRB). It goes beyond just nail biting or occasionally chewing on a finger. It's not a habit or a tic, but rather a disorder. People with this condition gnaw at and eat their skin, leaving it bloody, damaged, and, in some cases, infected.