Jaw problems related to the temporomandibular joint (TMJ) are referred to as temporomandibular joint disorders (TMD) or TMJ disorders. The skull and the lower jaw connect at the TMJ. Jaw pain and discomfort radiating from the TMJ and surrounding jaw muscles can trigger headaches, ringing in the ears, neck pain, and painful clicking and popping in the jaw. Symptoms may not be long-lasting for some people, but for others the pain and discomfort caused by simple facial movements can be excruciating. Constant jaw clenching and teeth grinding can make the pain worse.