Temporomandibular joint (TMJ) syndrome

Alternative names:

myofacial pain dysfunction syndrome; TMJ

Symptoms:

• headache
• jaw pain or tenderness of the jaw
• dull, aching facial pain
• biting or chewing difficulty or discomfort
• clicking sound while chewing or opening the mouth
• grating sensation while chewing
• decreased ability to open or close the mouth

Signs and tests:

A physical examination may reveal tenderness of the TMJ and connecting muscles. A dental examination may show malalignment of the bite. In some cases, physical examination is normal.

• TMJ X-rays may show abnormalities, but can be difficult to read.
• An MRI of the jaw area may occasionally be performed.