The American Academy Of Otolaryngology–Head And Neck Surgery (AAO-HNS) Is One Of The World’s Largest Organizations Representing Specialists Who Treat The Ears, Nose, Throat, And Related Structures Of The Head And Neck. Otolaryngologist–Head And Neck Surgeons Diagnose And Treat Medical Disorders That Are Among The Most Common Affecting Patients Of All Ages In The United States And Around The World.