primary immunodeficiency syndrome
"I was on Hizentra and never felt well - ever!  During infusion, I would immediately become nauseated.  Shortly thereafter I would experience a horrible headache. My Pre-medications were Zofran, Zomig (for my migraine problems), Tylenol,  and Benadryl.  My trough level was at a decent level so I was able to have my sinus surgery.  I had post sinus infections of 3 different bacteria. I just kept getting sicker and sicker.  Hizentra was the worst drug interactions ever put into my body for 8 months!"