it may be pressure buildup in your ears which can happen from allergies. you could try an over-the-counter allergy treatment -- something with a decongestant if you have no heart problems and your blood pressure is fine (make sure to read the label to make sure the medication is ok for you) -- for a few days and see if that helps. if not you should check with your doctor as you don't want to ignore hearing loss.
what causes rumbling noise in both ears? . what causes rumbling like a motor running in both ears? i can't hear bass tones. my blood pressure is good. . i have no other symptoms.