On my scrotum dry skin grows, and it gets washed away when I take bathe. If I don't wash it, it covers the whole scrotum and grows on penis skin also. There is no itching, no pain. I have it for more than one years. Recently, tried dermasole shampoo that works, but for only two or three days. The dead brown color crusts comes back again. I have a history of jock itch on my thigh. It was completely disappeared after using anti-fungal cream.