TMJ dysfunction impacts the temporomandibular joint (the hinge that connects your lower jaw to the skull), which is essential for chewing, speaking, and facial expressions. Pain can range from mild to severe and can affect one or both sides of the jaw. The condition can be caused by jaw misalignment, teeth grinding, arthritis, muscle tension, trauma, or repetitive jaw movements.
Common symptoms include jaw stiffness, pain, or tenderness, muscle spasms, and difficulty opening or closing the mouth. Many people also experience clicking or popping sounds, facial discomfort, headaches, and neck tension from overworked jaw muscles.