J.G.
Hi M.! I have had excema since I was a child. It went away for 14 years after having my first son, but has now come back (strange). I found that mine worsens when I am nervous or have a lot of anxiety. As far as food, I can eat anything, but I avoid cutting acidic vegetables and fruits- that always seemed to trigger it too.
My suggestions would be trying some relaxation methods, like Yoga or meditation. Also stay away from cutting veggies like potatos and tomatos. I know not much help, but I haven't found anything that helps either after many visits to dermatologists.
Good luck!