What do i Have? ...cold hives, itchy red palms, red patches

[jthai89]

For the past two weeks, I've been having some kind of allergic reaction to things that I'm used to. For example, when i drink cold sweet milk tea or green tea, I break out in hives. When I went swimming, my skin turned bright red and my arms and legs broke out in tiny hives all over. My hives break out in different part and disappears while another part breaks out. It lasts for about and hour or two. Another thing is that before my hives break out, I notice that my palms get really itchy, internally, and red, with A LOT of pressure. It's really uncomfortable and grows all over and around my fingers. Pretty soon, the pressure bursts out and thats when i start seeing hives on my arms. Last night it happened again, but it was a little different: After the hives disappeared, I grew red patches that spreaded all over my arms and legs. When i didn't touch anything, my palms were normal. But when i touched water or do stuff with my hand (i was at work making drinks) the itchy red palms feeling came back and i break out. Someone please tell what is this skin disorder I'm having. Right now, I'm currenty taking Hydroxyzine hcl and cimetidine