I get IVIG, takes me 4 hours a bag, my doctor does a real slow drip, it helps to orevent those head aches, & side effects. So get comfy ! I am one of the unlucky ones that am allergic, I have had 2 reactions to treatment, I have high does pred. now before IVIG, that keeps me from rejectibg the antibodies I am allergic to. The reaction I get starts with head ache fever right away, fever starts at 101, builds to 106, & stays that way until they have given me pred. to stop it, I also get hives all over my body & ache like the flu.
Most people do fine, & feel great ! They take your temp thoughout the proceedure, so if you start running one that is a warning sign. They will know what to do though, & it is something that can be controlled.
Mary