Your allergies - that you recently mentioned - need details - history.
Is this problem isolated or is allergy problem being enhanced from infection somewhere else - such as from immune system - colds - causing a generalized traveling infection from lungs? Is allergies still ongoing and if so, are they seasonal? What did your CBCT note about sinuses?
Your nodule near ear, cyst in mouth may be caused by infection. Your jaw may be getting infected from traveling infection.
I mentioned what the link discusses to you yesterday and before - including... a steep mandibular plane and palatal vault, so this makes it easier for bacteria to collect. As in your link, I also mentioned that your posterior joint space is wide. On your scans, your TMJs are smooth and rounded without defects - but any ongoing present infection can change that - this may be happening. You don't have wisdom teeth.
I don't think that any of the 5 medications that you had used is cause of tinnitus. It may be infection.
Do you have blood work? How often do you get facial pain? Headaches or eye pain? Sorry for all the questions.
I still think that you should discuss Amoxicillin 250 mg 3X/day with your dentist. If your jaw starts to lock, then steroid injections will also be needed.