The otorhinolaryngologist who treats patients with ear, nose, and throat manifestations of allergy is frequently envied by his colleagues in allied fields of allergy, presumably because the type of patients that he sees are relatively simple to diagnose and treat. This viewpoint is based on the assumption that the etiology is primarily due to inhalant factors which are easy to detect and which cause symptoms that respond readily to treatment. The patient, as a rule, is not considered too ill; consequently, he is not expected to present a complicated clinical problem. As our personal experience in the knowledge and practice of handling the allergic patient increases, we are more impressed with the complicated problems presented to the otorhinolaryngologist who treats such patients. We have not found the diagnosis of perennial nasal allergy and its associated symptoms to be easy, nor is the treatment stereotyped and simple. The patients we see