That doesn’t sound fun. I would say speak with your MS team or general Doctor/nurse for advice and treatment. The reason I would advise this is because your body had an allergic response to the medication, and you are still experiencing some symptoms. Hope you get medical support. As you have done already (very sensible) it may only require Benadryl. Sounds like you are taking the right steps. All the best.

Hey @rach , sounds more like an oversensitive reaction. Could be caused by other substances in the infusion fluid. An allergic reaction occurs within a few seconds. The protocol over here is that the treatment must be stopped immediately. I fainted the first 3 times after about 15minutes. They don't know why, but decelerated the drip a bit. But yep, felt like being hit by something large for a week or 2. Flushing and itching indeed was very anoying! But gone after 2 weeks. So were the headaches. 2nd time was a bit better. But always call your hospital, that's what they are there for! Good luck!