To me this sounds like what I get sometimes. I think they are simply called "swollen taste buds". I sometimes get them if I eat something too hot (ex:french fries that aren't cool enough) or sometimes they just appear. They are kindof painful and really annoying, but mine just usually go away within a few days. I know, you just want to rip them away, but I just leave mine alone. Don't know what they are exactly caused from. ?