This document discusses the effects of diabetes on the ear, nose and throat. It lists common conditions caused by diabetes such as hearing loss, malignant otitis externa, facial palsy and furuncle. It then provides information on common signs of hearing loss and why ears may ring. It also discusses malignant otitis externa with facial palsy and malignant external otitis with pus draining. Finally, it provides do's and don'ts for ear care including not using cotton swabs, being careful with headphones, exercising to prevent tinnitus, and protecting hearing at work.