A member asked:

I have severe muscle-like spasms behind my jaw and under my left ear. it happens maybe every 2 months. what could this be?

5 doctors weighed in across 2 answers
Dr. Simon Rosenberg answered

Specializes in Prosthodontics

TMJ Disorder/Bruxism: The likely dental related cause can either be clenching or grinding your teeth (bruxism) or other problem with the joint that joins your mandible to the temporal bone on the side of your head. Salivary gland problems or a dental abscess can also cause this type of pain. See your dentist for proper evaluation and diagnosis.

Answered 10/2/2015

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Bruxing: Possibly you are grinding your teeth and this is causing muscle spasm in the muscle which just happens to attach to the back border of the jaw. See your dentist to rule out bruxing.

Answered 4/12/2020

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