temporomandibular joint disorde
"I have an unusual type of Tempro Mandibular Joint Disorder that doesn't cause much joint pain, but limits my jaw movement and causes a lot of facial tension/muscle soreness and headaches. I was prescribed Flexeril (cyclobenzaprine) with the knowledge that it would not help my primary symptom (limited jaw range) since this was caused by a joint problem, not a muscle one. However, taking cyclobenzaprine significantly reduced my facial tension and headaches, so I definitely found that this medicine helped my TMJ. It might not help, but it's definitely worth a try if your doctor suggests it. I also found side effects to be very minimal."