Although extremely rare, this young lady might want to see a dentist or dermatologist to rule out PEMPHIGUS VULGARIS. Most doctors overlook it as an option because it's so rare but the blisters all over the inside of the mouth, throat, and tongue along with the soreness and inability to swallow really do make me wonder. Also, it can onset very rapidly with no previous warning or symptoms. Left untreated, it can be fatal. Agressively treated, it is quite managable. Leave no stone unturned!View Thread