Dear Doctor, I am a 21 year old male, recently I've been getting under the skin bumps near my genitals. They usually appear in the area either in-between the thigh and the beginning of the testicles or on the buttox. The bumps are painful to the touch and painful to sit on. I've popped one of them and they secrete a liquid similar to that when you pop a pimple. They go away and appear one at a time every now and then. I am growing concerned because this started happening all of a sudden. It is not possible that it may be an STD, I'd appreciate any advice you can give me.