Biting your lip from time to time isn’t a problem. However, in some cases, people are unable to control the habit, and it becomes what’s known as a body-focused repetitive behavior (BFRB). While not ...

Dear Dr. Reitz: I have a habit of biting my lip when I am nervous or anxious, often without even knowing I am doing it. A few months ago a painless lump suddenly formed inside my lower lip that gets ...