groin area. I went to the pharmacist but he said it was not a side effect of Antabuse and that I must have got an allergic reaction to something else. It's really itchy and sore now and i read on this website that rashes and hives are a severe side effect, so I don't know whether to stop taking it or wait to see my doctor and hope it settles down in the mean time. Has this happened to anyone else?