Tension headaches are common and may occur when a person clenches their jaw. People may clench their jaw more often if they have bruxism, which is when a person unconsciously clenches or grinds their ...

Bruxism is when a person grinds or clenches their teeth while not chewing. It typically occurs during sleep, and the person often does not know they are doing it. Causes include teeth growing, a ...

Add Yahoo as a preferred source to see more of our stories on Google. If you wake up with a headache, sore jaw muscles or achy teeth, you might be grinding your teeth at night or clenching your jaw.

A mouth guard, also called a night guard, can help protect your teeth from the effects of grinding them at night. Another name for these devices is occlusal splints. (Photo Credit: iStock/Getty Images ...

If you wake up with a headache, sore jaw muscles or achy teeth, you might be grinding your teeth at night or clenching your jaw. The condition — bruxism — is surprisingly common, experts say. Without ...