A member asked:

What causes a bubble on top of a bug bite?

A doctor has provided 1 answer

Blister Insect Bite: Many bug bites are harmless. They itch or sting a little, and the symptoms disappear withing a day or two. There are some types of bugs that cause more severe side effects when they bite human skin. One of these side effects is blisters. Those who are bitten by a bug and find their skin blistering may panic because they do not know what is going on. Blistering from a bug bite is not uncommon..

Answered 11/17/2020

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