In some cases, physical conditions can cause a person to bite their lips when they use their mouth for talking or chewing. In other cases, the cause can be psychological. People may bite their lip as a physical response to an emotional state, such as stress, fear, or anxiety.

Beside above, what to do when you keep biting your lip? Other treatment options for habitual lip biting may include:

cognitive behavioral therapy. counseling. relaxation techniques. hypnosis. acupuncture. prescription sedatives. prosthetic shields or soft mouth guards. replacement behaviors, such as chewing gum instead.

Subsequently, question is, why do you keep biting your lip in the same place?

Many people do bite or chew on the insides of the lower lip or cheek, perhaps out of boredom or nerves. This habit is often initially prompted by a misdirection of the teeth that causes the person to mistakenly bite into the lower lip while chewing.

Why do I keep accidentally biting the inside of my cheek superstition?

Some people think of cheek biting as a harmless, bad habit similar to nail biting. Though it appears to be a repetitive behavior, it can be a sign of a mental health condition similar to obsessive-compulsive disorder (OCD) driven by stress and anxiety.