Tinnitus may be caused by minor / major damage anywhere in the hearing pathway from the middle ear, inner ear, auditory nerves, to the brainstem & brain. The pathway is sending a signal to the brain that there is an external sound, whereas there is none. These minor defects may be extremely small, and not picked up by audiogram / MRI / angiogram.Sometimes, this may be due to minor alterations in blood supply anywhere in the pathway.Often, none of the medicines work. Some do suppress the tinnitus. Most often the patient learns to ignore the tinnitus, and / or the tinnitus goes away on its own.In this case, if the tinnitus is worse during the periods, then definitely it may be blood supply / hormone related and with menopause round the corner, there is a strong possibility that the tinnitus might disappear.