Scrotum very itchy, wet and smells

Help! :( This thing is not a fungus nor a yeast infection. I have had diagnosed diabetes for a few years now. I've tried every known medicine/treatment for this male genital problem and it just wont go away-had this for years. My scrotum is always wet due to my large muscular legs rubbing against my crotch area. Drying it out would seem to end the problem but that only cracks my skin and it gets itchy again and I can't be washing every hour of the day (washing does aliviate it for a little while). Lotions keep the area too wet and I get the smells back. It has gotten so bad that my skin is cracking, pealing and sometimes bleads a bit.
I've seen general doctors, skin specialists etc. without help. One specialist doctor said it came about from anal intercourse (with a woman) about 7 years ago. I had a rubber on, but since it only covered my shaft and not my genitals - they got it! It also seems that this "swamp rot" can be catching because currently my wife has gotten the same symptoms between and around her breast area.
What can I do, or use, to get rid of this problem for good? :cry: b]