Eustachian tube dysfunction (ETD) is when the tube does not open when swallowing or yawning. This tube connects the middle ear to the back of the nose and upper throat. Its purpose is to equalize air pressure in the middle ear with the pressure outside it. This does not happen with ETD.
Eustachian tube dysfunction. Patient website. Available at: https://patient.info/ears-nose-throat-mouth/earache-ear-pain/eustachian-tube-dysfunction. Accessed February 10, 2021.
Nasopharyngeal cancer treatment (Adult). National Cancer Institute website. Available at: https://www.cancer.gov/types/head-and-neck/patient/adult/nasopharyngeal-treatment-pdq. Accessed February 10, 2021.
Otitis media with effusion (OME). EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/otitis-media-with-effusion-ome. Accessed February 10, 2021.
Last reviewed December 2020 by EBSCO Medical Review Board
James P. Cornell, MD
Last Updated: 2/10/2021
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