I just had this happen the other day, I think its the nicotine, especially if you accidentally get the juice in your mouth. I'm also sensitive to PG, so it could be this also. I stopped vaping for 1 day and it healed up nicely. Now I only use Ecopure no PG and try hard not to get juice in my mouth and drink water.
Hope this helps you, I know it hurts, been there!!
Hey Mentholgirl i have been hearing lots of good things about this Ecopure.How is it really? I mean i have seen lots of reviews as well, but i rather hear it from a real person,LOL hate to say that but I'm sure you know what i mean.And where can i buy Ecopure cause i really do not want to order it from Europe takes to long and defently not from china have lost packages to U.S Customs in the past...So if you or any one can point me in the right direction i would really appreciated.....
Thanks in advance