Bruxist for 30 years: a sense of fullness in ear; jaw tight on that side; light headed when move neck; lethargic or drowsy?

TMJ Disorder: What you describe is a disorder of your temporomandibular joint. tmj joints are near your ears and the muscles, nerves & blood supply to your face, skull and neck. more than a jaw click or pop alone, tmjd can be fatigue, brain fog, bruxism/ clenching, ringing ear(s), pain, bite changes, voice changes, headaches & other symptoms. See your dentist or a TMJ specialist (doctor/dentist)... And relax...