Penis skin turning black, burning sensation, no smell or any discharge, blood test negative. Suggestion?
I am 40 years and skin on my penis is turning black . skin on the tip of the penis got peeled and the red flesh is giving burning sensation when i walk. No smell or any discharge . I saw the doctor , they ran blood test and culture test. Both came negative. I also observered that my lips has a dark line now. Any suggestions to find out what it is?