The ENT I went to said I had acid reflux and that was what was causing my allergy-like symptoms. However, the allergist adn GP said it was not. My symptoms get worse during the spring mid-summer and early autumn. I also live in a sub-tropical environment.
I perpetually cough when I laugh due to a deluge of mucus that is shaken loose, need to clear my throat frequently, have a hoarse voice during the times mentioned above and wake up with a sore throat every morning.
Yes, it is possible for your symptoms to be caused by reflux. Due to acid your body can react with swelling and inflammation that causes allergy like symptoms. For some reason many people seem to have flares during certain times of the year as well. My Mom has always had more problems in the spring and the few times she's had an active bleeding ulcer have always been spring time. Perhaps the allergies cause a reflux flare or the allergy medicines cause a flare???? Who knows but I do know that I've heard of others with the same symptoms.
Did your ENT recommend medication? A lot of docs will do a medication trial as a diagnostic test. In other words, if you go on reflux meds and your symptoms improve then you would know they are due to the reflux. It's one of the least invasive tests. But, remember if they do have you do this that it can take weeks for the inflammation due to the reflux to go down enough to get the full effect. Keeping a log during this time can be very useful.
Good Luck - Stephanie