65. Unilateral otitis- what to suspect

The differential list for unilateral otitis can be quite different from the typical allergic otitis. It is essential to perform a full otoscopic examination (even if if requires anesthesia or sedation) to assure a foreign body or mass is not present. Either of these can cause nasty, persistent infections that often only affect one ear. Instead of treating with topical medications over and over again, make sure you go searching for the primary cause.