This is your jaw joint. It can get inflamed by grinding your teeth or a tight chewing muscle. The best way to treat it is to use my anti inflammatory electroacupuncture treatment. that can get rid of the inflammation, relax the muscle and release endorphins to relieve pain. Now you know why it works so well. iF YOU DON’T LIKE NEEDLES, I can treat it with FSM which doesn’t use needles at all but typically takes longer to do the treatment and takes more treatments.