Melody,
I know you are going through a lot right now.
I just wanted to say that my niece was given an IVIG when she was hit with Guillain Barre over a year ago. I know she had more than one. Anyway, the only thing I can recall is that she had bad headaches and it made her sick to her stomach. However, she had also had two spinal taps. So, those are probably what gave her the headaches. Anyway, within a few days she improved rapidly!!!
And, the only residual stuff, and from the Guillain Barre only was a slow improvement in her face; smiling and things of that nature. I don't recall her having side effects other than from the Prednisone BEFORE they figured out what was wrong with her.
Also, I know what you mean by the nurses. But in fact, I don't think they are allowed to say too much...doctor's orders I believe. I have had this happen 100 times! Hang in there and I hope Alan gets better!