Biting inside of your cheek accidentally is excruciatingly painful as it is, but it’s worse when you learn the other reasons that could be possibly causing it. Dr. Renae Sweeney on TikTok has explained different reasons why people bite their cheeks and what can be done to stop the habit. Why people bite the insides of their cheeks According to the doctor, chronic cheek biting is a compulsive behavior known as morsicatio buccarum. People habituated to biting their cheeks will find white residue in their mouth, which is nothing but excess keratin produced in response to constant trauma to the ch…