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2. Eustachian tube dysfunction - Wikipedia

   en.wikipedia.org/wiki/Eustachian_tube_dysfunction

   Eustachian tube dysfunction can be caused by a number of factors. Some common causes include the flu, allergies, a cold, and sinus infections. [6] In patients with chronic ear disease such as cholesteatoma and chronic discharge, studies showed that they have obstructive pathology at the ear side of the Eustachian tube.

3. Patulous Eustachian tube - Wikipedia

   en.wikipedia.org/wiki/Patulous_Eustachian_tube

   With patulous Eustachian tube, variations in upper airway pressure associated with respiration are transmitted to the middle ear through the Eustachian tube. This causes an unpleasant fullness feeling in the middle ear and alters the auditory perception. Complaints seem to include muffled hearing and autophony.

4. Eustachian tube - Wikipedia

   en.wikipedia.org/wiki/Eustachian_tube

   The Eustachian tube (/ j uː ˈ s t eɪ ʃ ən /), also called the auditory tube or pharyngotympanic tube, [1] is a tube that links the nasopharynx to the middle ear, of which it is also a part. In adult humans, the Eustachian tube is approximately 35 mm (1.4 in) long and 3 mm (0.12 in) in diameter. [ 2 ]

5. Why do my ears feel clogged? 5 Things you can do right now. - AOL

   www.aol.com/lifestyle/why-ears-feel-clogged-5...

   For those with Eustachian tube dysfunction, their ear has a hard time equalizing the pressure. ... The Valsalva maneuver can also help to temporarily unblock or equalize the pressure in the middle ...

6. Tympanic membrane retraction - Wikipedia

   en.wikipedia.org/wiki/Tympanic_membrane_retraction

   This may be caused by disrupted gas exchange in the middle ear mucosa, inadequate opening of the Eustachian tube or a combination of these factors. People with a patulous Eustachian tube may also cause negative middle ear pressure by repeatedly sniffing to try to keep their Eustachian tube closed. [6]

7. Otitis media - Wikipedia

   en.wikipedia.org/wiki/Otitis_media

   Otitis media with effusion (OME), also known as serous otitis media (SOM) or secretory otitis media (SOM), and colloquially referred to as 'glue ear,' [27] is fluid accumulation that can occur in the middle ear and mastoid air cells due to negative pressure produced by dysfunction of the Eustachian tube.