If I'm in the wrong group please direct me to the right group. Is Vasculitis an autoimmune disease? My RBC, WBC and Immature granules are too high. The ANA is negative. I get a rash on my left side under my spleen. It goes away on it's own but has come back several times. Before the negative ANA my doctor was convinced I had Vasculitis and wants a biopsy. I don't want to do one unless I really have this. Waiting to hear from doctor.