Hi, I am scheduled to have a lumpectomy the 17th of October.After the surgery,I will have radiation therapy and then Tamoxifen.I read that this anti cancer medicine can give me several side effects including Urticaria (Hives)My worry is that, ( I've had hives for almost nine years a few years back and Doctors never knew from what) by taking Tamoxifen could start again my hives.I used to have my eyes,throat and lips swell so dangerously to the point to have an injection administered immediately upon arriving to the emergency at the hospital, or to my doctor.Can anyone please tell me if Tamoxifen gave them hives? What alternative will I have if indeed Tamoxifen will give me hives? I am also very allergic to aspirin and anti inflammatory. Your suggestions and advices will be greatly appreciated.Thank you