Additional Diagnosis

I was wondering if anyone else has been diagnosed with additional autoimmune diseases? I was originally diagnosed with cidp which I have doubted from the beginning. I now have antibodies for sjogrens, and stiff person syndrome. I have developed dystonia at times. Anyone else have anything similar with their cidp?

On another note I have been on IVIG for 3-4 years. Does anyone else feel worse after they infuse this? Not just the fatigue and malaise, but it seems to magnify my burning for a few days after. Just wondering if this is normal. Thanks