There are several signs that a person has bruxism. The first of these is wear to the teeth. If a person’s teeth are all the same length or appear flat, this is a sign of teeth grinding during sleep.
Other, less obvious, signs include neck pain due to muscle tensing, earaches, jaw pain, the jaw joint producing clicking sounds, loose teeth, a pain in the area just below the ears, morning headaches, sore teeth, and a white line on the inside of the cheek.
Any of these symptoms are signs of bruxism with headaches being the most common. Bruxism is a very common condition and also a naturally occurring one as it has been observed in utero.