Has anyone ever heard of someone having a severe reaction to Avonex after successful prolonged use? I have taken Avonex for eight years, and except for the usual side effects, everything was great. That all changed last week when I developed a serious reaction after taking my shot. I developed very severe hives that covered my entire body. The ER Dr's said they had never seen hives so bad. Their opinion was that Avonex was the culprit since they couldn't think of anything else ( I had no dietary changes, deodorant, detergent, etc..). I was told to follow up with my neuro. His (neuro) initial opinion was that it was not the Avonex, but he wanted to discuss it with his colleagues and Biogen. Biogen told him that I am not the first person that this has happened to, but that it is VERY rare. They were adimant that I discontinue the use of Avonex immediately.
So, in a nutshell, I am just wondering if anyone else has heard of such a thing. I am somewhat disappointed as I feel Avonex was doing it's intended job very well for me.
I now have daily injections of Copaxone to look forward to, but I'm not too worried about it.