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A 23-year-old female asked:

I have a weird lump on the side of my penis. it looks like a black head, but it wont go away. how do i know it is not an std?

2 doctor answers11 doctors weighed in
Dr. Robert Killian
General Practice 28 years experience
With an Examination: Your profile says you are a female. A female with a penis? Are you transgendered? Are you on hormones? smoking? A 'blackhead' is not indicative of any STD.
Dr. Shariq Refai
Psychiatry 13 years experience
Well: the best way to know if you have an STD is to go to the doctor have an appropriate history, physical exam, and lab work done.

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Last updated Jul 22, 2014

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