Thanks for the query. From an anatomical standpoint, the nerves that control the ear and facial movements travel on the same bony canal behind the ear, thus they can have inter-relation in that sense; however, I have not heard much reports of fibromyalgia
causing tinnitus; make sure you are not taking larger amounts of aspirin
daily, since tinnitus can be a sign of salicylate toxicity.
Hope that helps, wish you the best,
Dr Brenes-Salazar MD
Mayo Clinic MN