Saw my rheumy yesterday and we went over the events of the last almost 2 months. When I told him the symptoms I had after my last Humira injection. He feels that I had a lupus event, not serum sickness as my GI diagnosed [by phone]. He said that since I had developed anti-dsDNA antibodies when taking Remicade, that I was at higher risk to develop them on Humira. Some recent reports show that people with similar histories on Remicade, had some whopper Humira induced lupus events.
In addition, it is thought that the EKG changes seen a week after the reaction started were caused by the "lupus event." I go for a cardiac CT scan in two weeks. Can't do a treadmill because I am still in a boot cast because the bone fragment is not reattaching to the fibula.
My rheumy was distrubed that noone bothered to do the appropriate lab tests to determine the exact cause of the Humira reaction.
Just thought I would share my rheumy's thoughts.