The External Auditory Canal: Examination and Evaluation.

The external auditory canal is a highly specialized skin appendage whose primary purpose is to provide a pathway for the transmission of sound to the tympanic membrane and beyond. It is also a frequent source of symptoms for our patients. Sources of pain, hearing loss, tinnitus, itching, and other sensations can be inferred from an appropriate history. This should be followed by a thorough cleaning of the ear, so that a thorough examination can be performed.