I am a double board certified clinical doctor and can help you with this.
An infection would not be chronic as you describe this.
I don't think it is infection.
Reflux is definitely a possibility, and there is no way to rule that out entirely unless you see a GI doctor and have Ph monitoring of the esophagus.
ENT is not in a position to exclude reflux.
That is why you had conflicting opinions.
It can be neurological, for example, myastehnia graves, MS, and others, but these are quite rare, and you really don't have the symptom picture.
I think that will be ruled out....degenerative disease.
I suggest that after your testing, if there are no findings, that you see a gastroenterologist.
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