This sounds exactly like I could've written it. I am experiencing the same problems...post nasal drip, ear blockage, lump in throat, acid reflux, etc. I was tested for allergies years ago and tested positive for tree pollen and mold. I haven't hard too many issues, but when my sinuses get filled, I suffer. Right now, allergy season is hitting hard and this post nasal drip is leaving a nagging, irritating cough. I can't take anything with a decongestant because of high bp and anxiety issues. I'm trying to make due with clarinex and other anti-histamines, but so far, no luck.