When the TMJ or the surrounding muscles and ligaments become inflamed or damaged, it can lead to a range of symptoms, including: Pain: Aching or sharp pain in the jaw joint, face, neck, or ear. Tenderness: Sensitivity to touch in the jaw joint or surrounding muscles. Stiffness: Difficulty opening or closing your mouth, or limited jaw movement. Locking: The jaw may become locked ... https://www.tmjsleepclinic.com/temporomandibular-disorders-tmj/