How do I get rid of hives?

I have been getting hives for almost 2 months and they usually come at around when I wake up and around when I go to bed. The show up all over my body, my feet, legs, thighs, torso, arms, neck, and face. The even show up on the palms of my hands and the soles of my feet. On my face they show up so bad it looks like I've been beaten. I've been to the hospital and they gave me every antihistamine including steroids, nothings worked. About 3 years ago I got allergy testing and the only thing I'm allergic to is dairy, but i don't eat/drink dairy products. The itch like hec and everyday they get worse. I am going to go insane. I'm not under any stress or nervousness at all so how can I make these go away.