I am in no way a medical professional, but I have to respond because I have twice in my life had conditions that could not be diagnosed. Both eventually were, but what a horror show until then.

My first thought on reading as far as your instant reaction to the gin potion was allergy. Short of a pre-existing condition, I can’t think of anything, other than a poison, that could act that fast.

As I read further, I was going to mention mold but then you did. Mold is insidious. Mold can cause hundreds of nasty symptoms. That you had been sleeping on it for god knows how long means that you were breathing it in all that time even though you didn’t know it was there. I don’t know if there is a medical specialty in mycology but it might be a place to start.

Also, consider that what’s going on may have been caused by more than one condition or more than one allergen or mold or … If the gin event was an allergy, maybe it triggered nasty mold spores that had been hidden in your larynx.. I mean, I’m just throwing out ideas here, but it could be two or three different maladies.

In any case, don’t give up. There is a doctor who knows what it is and has at least an idea how to cure it.

Good luck.