I had been having some minor fungal issues on my groin and penis lately and was using an OTC cream to treat it. But recently I had some pain on the shaft of my penis and noticed a dark red blotch on the shaft just below the head which is painful to the touch.
There are no bumps but the skin inside the blotch is slightly damaged as if it was healing from a burn.
Any ideas what it could be. I have not had any unsafe sex episodes in a very long time so I don't suspect an STD, but I'm not sure either.