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There are red dots on my back, never had them before and I don't know if they are allergies.

Sep 23 20211 people replied
Description Of Condition:

This morning, the hepatitis A and B vaccine, the evening suddenly felt a small spot on the back, let a friend take a picture of me, I do not know if it is related to the vaccine, recently in the university military training, I do not know if it is related to the military training clothes material is not good, please solve!

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