Symptoms for me: worst headache of my LIFE......and I've had some doozy migraines. I took migraine meds all night long after 2nd day of IVIG -- got NO relief. Went to ER next day per neuro's advice. Was given IV demerol and phenergan -- barely touched the pain. They tried to give me morphine (against neuro's advice), but it made me nauseous.

Afterwards, I continued to have headaches, rashes, fever, aching -- just felt rotten for about a month or so. Going into IVIG I was actually ok, MG-wise. Doc was trying to prepare me for thymectomy. IVIG sent me into a 3 month exacerbation.

From what I have SINCE read, migraine sufferers are most likely group to get aseptic meningitis.
http://www.medscape.com/viewarticle/413703

For so MANY, IVIG is "go-go juice". Hope it works MAGIC for you, Steph!!