A member asked:

A red blister appeared under my penis head after sex, been only with my wife for a year, std? do blisters appear for other reasons? painless no bother

A doctor has provided 1 answer

It is: probably due to trauma during rough sex but it could also be an std depending of your sexual history. An std lesion also could be painless. See your doctor for a check up.

Answered 8/23/2014

3.8k views

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