Still trying to find the cause of my SFN. My dad also suffers from it. We are in the process of doing tests for hereditary links and autoimmune markers, but it occurred to me that both my dad and I had major surgery and both had blood transfusions. I received 4 units, which I think means 4 different people. Don't know how many my dad had, but his was open heart surgery, so it was probably more than one unit.

Does anyone else have blood transfusions in their past, and, if so, did you ever find out your transfusion was the cause of acquired autoimmune problems?

I may be reaching here, but thought I throw it out to the group and see if it's possible.