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 ...

The human mouth primarily functions with the help of the temporomandibular joints, or the TMJs. These are complex sliding hinge joints on both sides of the face that connect the lower jaw to the skull ...

An 11-year-old boy’s painful chronic lockjaw may have been triggered by conversion disorder, a mental health condition that causes physical symptoms, according to a case report published on April 7 in ...