I am 36 male and having this same issue around my groin area (never had anything on the penis ever only on the undercarriage of the scrotum) on my buttocks and inner thighs. I am a heavy person. I have had unprotected sex in my past. I have been tested after being abstinent for a long time for both HSV 1 and 2 and for HIV and all results came back negative. I am aware there is no test for HPV in men. I red online you can use apple cider vinegar to test and if it turns white it's warts. I tried that and it did. I told my doctor and my nurse mother and they said that is foolish. Any skin lesions that has apple cider vinegar applied to it overnight will turn white, hurt and swell. I have no idea what this is. Any insight? The doctors don't know anything either.
Also sometimes they bleed, they have no wart looking head. they also puss. It acts like cystic acne.
Could it be syphilis even though I have never had a penile lesion. I heard syphilis can mimmik other diseases.
Oh and yes it itches, but not always. Like right now i feel ok.