Hi, I Have Been Diagnosed With Vasculitis About 4 Months

Hi, I have been diagnosed with vasculitis about 4 months ago. I have seen a nephrologist, urologist and derm. I am having a major flare up and need to know if I need to see any other specialist that may be able to assist me. I am also taking OTC vitamins and herbal tablets; would calcium, vitamin D supplements play a major part in this flare up?