Temporomandibular joint (TMJ) syndrome is a condition involving facial pain in the joints of the lower jaw. The abbreviation “TMJ” literally refers to the joint itself, although it is often used to refer to the disorder (TMD). The temporomandibular joints connect the lower jaw (the mandible) to the skull. Causes of TMJ syndrome may include:

• Arthritis
• Fractures
• Dislocations
• Tension-relieving habits, such as jaw clenching or tooth grinding, especially at night while sleeping
• Structural problems present since birth

Symptoms of TMJ syndrome include:

• Headache
• Earache
• Jaw pain or tenderness of the jaw
• Dull, aching facial pain
• Difficulty or discomfort when biting or chewing
• Clicking sound when chewing or opening the mouth
• Grating sensation when chewing
• Reduced ability to open or close the mouth