about a year ago I started to notice that my scrotum was itchy more often than normal, and noticed areas of discoloration on the skin. after vigorously scratching the first couple itch attacks, i would wake up with these thin, sort of scab-like flakes above of the discolored areas. the redness and discoloration has since spread, and now covers about 60% of my scrotum. the itchiness still comes in flare-ups, about once a week, and if I scratch it's the same result: flakes. I have always been a very sexually active person, but normally practice safe sex. I fear that I may have contracted something, and don't want to risk passing it on to new partners. what do i have? and how can i get rid of it?