Serous otitis : I think you meant serous otitis media. This is fluid of the middle ear that is not currently infected. It can follow from a cold, ear/sinus infection, or allergies. It definitely causes a blocked sensation of the ear and muffled hearing. You can have popping or crackling sounds in the ear with swallowing. See doctor for help getting rid of this problem.
Answered 11/21/2019
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2 doctors weighed in across 2 answers
2 doctors weighed in across 2 answers
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