PINEAPPLE????????????????????????!

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some people are more sensitive to acid than others. My mother-in-law has a medication that causes this also. As far as salt I'm not sure what the pH is but if I eat too many salty snack like pretzels I don't get blisters but the skin in mymouth shrivels up.

Your mouth must be sensitive to pineapple acid. Everyone has different taste buds. My mouth is sensitive to cinnamon gum, but not cinnamon.

You have :kinds of taste buds. Salty.sweet, spicy and bitter. Everyones are different. Yours must be sensitive and flare up at acid or salt.

Pineapple does the same thing to me. I just limit how much I eat.