Chronic Suppurative Otitis media has been traditionally described as a chronic inflammation of part or all of the tympanomastoid compartment comprising of eustachian tube, the tympanic cavity, the mastoid antrum and all the pneumatized spaces of temporal bone associated with perforation of the tympanic membrane and otorrhoea. The proximity of the middle ear cleft, the mastoid air cells to temporal and the intracranial compartments, places structures located in these areas at increased risk of infectious complications. The study is intended to know the incidence and frequency of extra–cranial complications in Diabetes Mellitus.