Noooo: ive never heard that. Blisters in the mouth especially in kids are usually a result of viral infections. There are several that cause blisters but the cold sore is most common. Also blistering can occur as a result of repeated trauma and allergic reactions. Forget about worms but take your child to the doctor and get this sorted out.
Answered 7/14/2016
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A doctor has provided 1 answer
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