granular myringitis granular myringitis granular myringitis is a long term condition in which there is inflammation of the tympanic membrane in the ear and formation of granulation tissue within the tympanic membrane. it is a type of otitis externa. granular myringitisother namesgmspecialtyotorhinolaryngology without treatment it can lead to narrowing of the ear canal. a number of treatment options exist including putting vinegar in the ear, using antibiotic drops, and surgery.