hello thank you for trusting HCM dear may be your suffering from chronic eustachian tube block.many causes for it most common possibility in your case chronic allergy.other possible causes are post nasal discharge due to sinus infection,or adenoid or obstruction etc..avoid cool drinks and freeze water, water vapor inhalation daily, use mask to prevent exposure to allergen.tab.alday-dc twice a day for five days will help.still symptoms not improved please consult your Ent surgeon he will examine and treat you accordingly. I think I answered to your question if you have any questions please feel free to ask. take care