I started to get a little eczema after eating bread for a few month. Usually I don't eat bread. Its part of a re-introduction experiment. I avoid tomato because it irritates my stomach - fresh, peeled plum, sun dried, well cooked, puree you name it. Interestingly my blood type is A. In the Blood Type Diet , Peter J D'Adamo claims tomato is not good for blood type A's.
I have just been doing a lot of research into eczema recently. I am concluding it is a result of accumulation of toxins in the body, and or bacteria and parasites. I am about to experiment with some slow chelation.