TMD is a chronic pain condition that affects the jaw joint, and its associated structures (such as the neck and chewing muscles). It affects women at a rate of 4:1. Sufferers of TMD are more likely than people without pain to have suffered trauma, grind and clench their teeth, suffer from other forms of chronic pain disorder (such as migraine, tension headache, irritable bowel, fibromyalgia), and have non-painful TMJ symptoms such as jaw noise and limitation of mandibular opening.
The most common forms of TMJ pain are arthralgia (or pain in the joint itself) and myofascial pain (muscle pain). Pain that is coming from the joint may be related to a disc displacement disorder
(from a bad trauma to the head area, or a click or intermittent locking). It can also be related to degenerative, psoriatic or rheumatoid arthritis, autoimmune or congenital disorders.
Myofascial pain or muscle pain is something that about 70% of the population experiences. It can be localized to the head and neck region or can be more widespread. In general the management of myofascial pain involves stress management, regular exercise, good posture and body mechanics, healthy diet, and adequate restorative sleep.