Bumps are tastebuds: It is normal to have a row of bumps on the back of the tongue. These are taste buds. When you get a white coating on your tongue, it is possible that this is thrush or a yeast infection. With thrush, the tongue is very sensitive to acidic foods. Thrush is more common with immune disorders, but is commonly seen in healthy individuals as well. When this happens in the future, have it evaluated.
Answered 10/30/2017
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