Sir,,,, i have been masterbating vigorously regularly..using saliva or oil. Slowly the penis got black in colour and dry. Now that there are wounds on penis skin. Colour of the foreskin changed to white. I applied Candid-B, slowly the upper layer of skin of glans changed. The skin is thin now. I showed to Dr. He change the cream to Clotrimazole. I also have fungal infection in groin and the skin got black. my worry is whether its a yeart infection or fungal infection of groin? why the glans and its underside covered by foreskin changed to white in colour? Why the skin layer of skin is changing?