Aloe vera :) you can use the pure aloe vera to apply over.
Here is more information about the wonder of aloe vera!
http://www.miracle-plant-aloe-vera.com/treating-eczema.html
http://www.livestrong.com/article/12969-treat-eczema-genital-region/
Wear loose clothing, moisturizing is very important. When the skin gets too dry it tends to flare up. Keep moisturizing.