Hi Doctor, Thanks in advance for taking time to answer my question. I have cold allergy & Eustachian tube keep opens and closes. Sometimes when I try open my ears with valsalva i hear ringing for few seconds . The occasional ringing happens with head movements, while turning or while opening ears and when exposed to very loud noise (like gun shot) . The ringing is for few seconds . It's really concerning. I have done audiometry test before 6 months. My score is 15 in both ears and doctor told its normal . My concern is , Is this occasional ringing a cause of concern or it's due to ETD . And should I repeat Audiometry?