Millions of people grind their teeth, and many of them are teenagers. The following are common causes and symptoms.

Key takeaways:

– Being bullied or any other event that causes stress and anxiety can trigger teeth grinding

– Jaw pain and waking up with a headache are common symptoms

– Frayed teeth edges are visible symptoms of teeth grinding

Your dentist can treat this habit and its effects, but lifestyle changes and stress management techniques will also go a long way.

Read the full story here: http://www.bbc.com/news/health-40593028