Most conditions that cause pain behind the ear aren't serious. Rarely, a tumor in or near the ear may be cancerous. An untreated ear infection can lead to mastoiditis, an infection of nearby bone.

At least 17 suspected and confirmed cases and 2 deaths are linked to a fungal meningitis outbreak at clinics in Mexico. Here's what you need to know about the infection.

A rare fungal infection thought to mainly occur in the northern Midwest and parts of the Southeast is more common in other parts of the U.S. than expected, new research published Wednesday finds.

The strain in question, Candia auris, means ear, and was first found in the ears of a patient in Japan in 2009, Weber explained. Since then, it has spread to all continents.