Q What would cause your son to constantly have a burning throat and blisters along the sides of his tongue?
Blisters and burning in the throat can arise due to many causes like - any infection either bacterial or viral, an allergic reaction, side effect of some medicines, eating more spicy or hot food, vitamin deficiencies etc. Give him mild food for a few days with plenty of water and a multivitamin daily. If he doesnt respond within a week, consult a physician.