Trauma is a factor, as well as repeated chewing of hard and tough foods over a long period of time. Repeatedly opening the mouth and laughing can also lead to damage to the joint cartilage and relaxation of the joint capsule, resulting in localized pain. This pain is usually dull and may radiate to the surrounding face and jaw. The pain is usually dull and may radiate to the surrounding face and jaw. Avoid the above mentioned bad habits and treat with anti-inflammatory, analgesic and cartilage nourishing drugs.