Jim - been at this for five years, two consecutive days per month. Our infusion center recommends a Benadryl an hour before. My neurologist prescribed Prednisone for the migraine headache that follow infusion. I stopped the prednisone after six months or so, kept up the Benadryl. Tylenol works now for occasional headache.
Neurologist started me on IVIG for pain (was at 9.5) and 'hope' that it would slow the progression of the neuropathy. Started in right leg ten years ago (although symptoms noted 50 years ago), is in all three limbs, but right leg is worse, followed by right arm.

Eric