so sorry to hear this!!! How many days post IVIG are you now?? Are you still drinking a ton of water?? did they give you some IV fluids??

I have had many of the symptoms when I get aseptic meningitis - a fever as high as 103, increased weakness in some ways- it's as the meningitis makes the IVIG less effective or soemthing the three times i've had it.. I also broke out in a rash on my palms - blistery rash and got strange eczema rash on my legs.. none of that happens anymore

The urine is a new one - are your kidney function tests (bun/creatinine ) normal? I don't know how a wbc reacts to IVIG, much less if you have meningitis (aspeptic), but i would think it would be increased as well.. are you on steriods/prednisone? As that will increase your WBC count quite substainally as well.. do you have signs of infection anywhere (aside from the headache)?

As far as rhabdomyolosis - that usually has a very high cpk (creatinine kinase) level...

so sorry your going through this - that can all be so frustrating!!!!