I'M Having Similar Problem. I have a Sore Throat That Wont go away, For about 1 Month now. Been to ENT Said its not Serious But Cant Find Problem. Other Doctors Said Acid Reflex, i Have taken Nexium, Zantac and Prilosec for about 2 1/2 weeks problem still wont go away. Feels Like someone taking a Fork to the back of My throat Very painful Most of the Time. I Just found out Tonight 30 Minutes after Taking a Benadryl Allergy pill. My Throat Feels Like it Should Normal, Has Been for about 6 hours Now. So I Will Go Back To the Doctors That Cant Figure it Out. And Have Them Test For Allergy Of Some Sort. The Only Thing Im Doing Different in 1 Month Since Began Is Gourmet Coffee and Centrum Vitamins. Could be The Allergy. Try Things like that will try to keep Posted on Condition with problem Goodluck.
I had a similar problem, so I started using Chloraseptic spray a lot. It numbs the gag reflex and helps soooo much.