I have been suffering from hives from the medications following breast cancer treatment. I was on Anastrozole for about 3 months when I started breaking out in hives. My whole body was covered. My oncologist switched me to tamoxifen, and it’s slightly better, but not much. This past weekend I was so miserable from the itching I ended up at an emergency clinic. The doctor there says it’s an allergic reaction to the cancer meds. He put me on a 7 day course of prednisone and told me to see an allergist. I can’t get an appt. to see the allergist until next month... and my next appt. with my oncologist isn’t until April 16. Sometimes I think it would have been easier to have had surgery to remove the cancer, followed up with radiation and forget taking these damn pills to prevent recurrence! Its been nearly a year of one thing after another since I was diagnosed with stage 2A!