<s>[INST] I have been on simvastatin for a few years but over the past year have really experienced severe tmj.  Although I have been a teeth grinder for many years when I sleep, mouth guards, dental treatments, etc, have not helped this problem.  I was wondering if simvastatin could be causing the flare ups with my tmj? [/INST] Heloo pt-there are many possible cause tmj disorder-•     Muscle problems that affect jaw movement•     Pain in the face around the jaw joint•     Problems within the joint itselfsuggestions that may help relieve your TMD pain or discomfort: •     Yawn and chew (especially gum or ice) as little as possible.•     Avoid extreme jaw movements, such as yelling or singing.•     When you need to yawn, place a fist under your chin and press up. This can keep your mouth from opening too wide.•     Try to remember to keep your teeth slightly apart as often as you can. Keep in mind that it is natural for your jaw to open a little if your lips are closed.•     Sleep on your back, not on your stomach.•     Don't rest your chin on your hand or hold the telephone between your shoulder and ear.•     Try to reduce stressthanks </s>