Lockjaw happens when your jaw muscles tighten up so much that you can't open your mouth properly. Tetanus is a serious bacterial infection that can cause lockjaw and muscle spasms. TMJ disorders can ...

Use a warm compress to relax your jaw muscles. Chewing hard foods can strain your jaw and make TMJ pain worse. Bad posture can increase stress on your jaw and neck muscles. Several treatments are ...

Edmund Khoo, DDS, is an orthodontist and clinical associate professor at the New York University College of Dentistry. TMD is a common cause of jaw pain, which can lead to clicking sounds and ...