Here is my experience that I think its similar to ONLY A FEW on this forum..
I am a 32 year old half japanese, half american male. I've been drinking rather heavily since I was 21 and never had such problems before. About 3 years ago I started getting HIVES AFTER drinking. I will get them all over my body and face. Its red, blotchy, bumpy and a little itchy. If scratched they would spread even more. I don't get red flushed or accelerated heart rate or beat red or dizzy while drinking. I can drink ALL night with no problems. It usually starts on my body about 8 hours after I stop drinking. Arms, legs, chest, back and face.. But they go away after a couple of hours. Untill the next drinking adventure. Symptoms are severe when I combine lack of sleep with alchohol. in fact I could have just one beer and only sleep for 3 hours that night, and the next day is bad hives..
I get the hives more when I drink any other alchohol except for Scotch whiskey. Beer is the worst.
a friend told me about Zantac and I put it to the test.
I took a max strengh zantac 30 minutes before going out on a beer drinking binge. I drank about 11 pints of Guiness. and I woke up the next day with NO HIVES. The first time in 3 years. Very pleased... BUT I started getting them later that day... 18 hours after I stopped drinking.. So I took another pill. the hyves went away... perhaps the alchohol was still in my system, and the zantact wore off? I'm still skeptical, so I try it again next time and will post here again.