Diet.

Wow, avoid tomato? I practically poor tomato sauce over everything.
But it's worth a shot. Here it says that bananas are bad as well. (Basically everything i eat is on this list )
http://sun1.awardspace.com/Conditions/Sola r_Urticaria/histamine_diet.htm

If anybody knows more about these kinds of diets, i'm all ears...
I'd like a high protein, low carb, high fat diet. (I'm trying to build some muscle.)