Ear infections are often caused by bacterial infections. But whether you get an outer or middle ear infection depends on how you become infected. Middle ear infection A middle ear infection often originates from a cold or other respiratory problem. The infection moves to one or both ears through the eustachian tubes.
Middle ear infections The middle ear is the area directly behind the eardrum. Middle ear infections are typically caused when bacteria or viruses from the mouth, eyes, and nasal passages get trapped behind the eardrum. The result is pain and a feeling of plugged ears. Some people may have trouble hearing, as an inflamed eardrum is not as sensitive to sound as it needs to be.
What Is It? Published: February, The middle ear is the space behind the eardrum, which is connected to the back of the throat by a passageway called the Eustachian tube. Middle ear infections, also called otitis media, can occur when congestion from an allergy or cold blocks the Eustachian tube. Fluid and pressure build up, so bacteria or viruses that have traveled up the Eustachian tube into the middle ear can multiply and cause an ear infection.
This can be due to anatomic factors and triggered by colds, allergies, and other respiratory infections. The eustachian tube is a passageway from the back of your nose and throat to your middle ear, which is the part of your ear that is behind the eardrum. If the eustachian tube is blocked, fluid or bacteria become trapped inside the ear and cause an infection. For some, the poor tubal function can persist into adulthood and is the main cause of middle ear infections in adults.