TMJ stands for the tempromandibular joint, which connects the lower jaw (mandible) to the skull (temporal bone). When that joint is misaligned or damaged in any way, it can cause a countless number of health problems including debilitating headaches, dizziness, jaw stiffness, ear aches, ringing in the ears, eye pain, problems swallowing, teeth that don’t line up or touch when biting, neck pain and more.