Thank you for the response, I really appreciate it. I haven't had covid yet thankfully (or at least never exhibited symptoms/tested positive for it).

I went to a gastroenterologist, but prior to all this happening as I have had issues in the past with acid reflux and had an endoscopy which showed nothing much but mild gastritis. That was 2+ years ago now though that I had it. I haven't been having any of my normal acid reflux symptoms throughout the last 14 months though since my hoarse voice and constant phlegm started.

I will ask the ENT at my next appointment on whether she would suggest seeing a gastro again. I may also ask for a big allergy test too. That is, of course, if she doesn't see anything on this trip back. I'll likely push for the CT scan too. I'm just so tired of feeling this way and not having my own voice for this long, not be able to talk for long without it getting sore/weak, and the throat clearing.

I did go on an acid reducer twice on my ENTs suggestion, but they did nothing even though I tried two kinds and a month of each.