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How can otitis media cause a ruptured eardrum?

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Cross-section diagram of the human ear showing the outer ear, middle ear, and inner ear, with labeled parts including the auricle, auditory canal, tympanic membrane, ossicles, cochlea, semicircular canals, and nerves. — human ear Structure of the human ear.

Otitis media, which is an inflammation of the middle ear lining, can lead to a ruptured tympanic membrane (eardrum) as a complication of the infection.1

During acute infections, the accumulation of fluid and pus within the middle-ear cavity can create significant pressure against the eardrum. This process, often involving suppuration (the discharge of pus), exerts physical stress on the membrane. If the pressure becomes sufficiently high and is not relieved through the eustachian tube—which may be blocked due to swelling or congestion—the eardrum can undergo perforation. While a ruptured eardrum may provide temporary relief from the pressure and associated pain, it carries risks such as hearing loss and requires medical attention to ensure proper healing and prevent further complications.12