I suffer from it.,have done since I was around 2 or 3, I'm now just turned 30. I have it on tops of my legs, back of knee and elbow joints, back of neck and all in my scalp. Worst is it on my hands. When I have bad flare ups looks like i've burnt my hands. I've now got no pigment in my fingers and half the back of my palms, so when i get tanned I end up looking like I've dipped the end half of my hands in white paint also when it's bad it gets into the fingers and under the nails, they go septic and nails end up falling off something like they did in the film The Fly.
I don't think at 2 or 3 i could have been that stressed. I've got it now under control through diet. I don't eat anything with artificial colourings in at all, that even goes as far as fish fingers and other breadcrumb covered foods. No carbonated drinks (beer doesn't count). No juice made from concentrate, Origina beeing about the worst culprit in that, generally no processed foods.
Some shower gels set it off. Some deoderants trigger it. Looks like chemical burns sometimes when the damn companies change an incredient and don't advertise it properly. I now stick to pretty much same shower gel and deoderant i've used for years.
I eat masses of vegetables and fruit, also one centrum multi- vitamin a day, two when the weater draws in so i can get enough vitamin D and zinc. When I feel a part getting itchy, then I start taking zinc suppliments aswell for a few weeks and try to figure out whats changed.
It's different for most sufferers and hope that you find a way of managing it. I tried creams and pills for years, they worked but then slowly the effects returned, only way I managed was the more vitamins I'm taking in, the better it seems. Vitamin D and Zinc seem to be the ones for me to load up on, I think i'm on about 5x RDA for both of them.
by a stupid GP. 
