Eustachian Tube Dysfunction
Pronounced: u-STA-shi-an tube dis-FUNC-shinEn Español (Spanish Version)
The eustachian tube is a small canal that connects the middle ear to the back of the nose and upper throat. Its purpose is to equalize the air pressure in the middle ear with the pressure outside it.
Eustachian tube dysfunction (ETD) occurs when the tube fails to open during swallowing or yawning. This results in a difference between the air pressure inside and outside the middle ear.
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ETD is caused by poor function or blockage of the eustachian tube, including:
- Inability of the tiny hairs inside the ear to remove fluid and infection
- Poor squeezing function within the eustachian tube
- Narrow eustachian tube—in infants
- Adenoid tissue blocking eustachian tube—in children
- Swollen nasal secretions that cause a blockage
- Tumors—in adults
Last reviewedSeptember 2013by Michael Woods, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.