Do you frequently experience discomfort in your face and jaw? If so, you may be suffering from a common condition known as temporomandibular joint disorder, also known as TMD. TMD is a condition that affects the temporomandibular joint. This is the ball-and-socket joint that attaches the lower jaw to the base of the skull. If you place your fingers on the back of your jaw near your ear and open your mouth, you can feel the temporomandibular joint move. One of the biggest struggles with this condition is that patients are often undiagnosed or misdiagnosed because many of the symptoms resemble other medical conditions.