DEAR DOCTOR K: My father recently saw his doctor, complaining of fever, fatigue, joint pain and rashes. His doctor suspects vasculitis. What is vasculitis? How is it diagnosed and treated?
DEAR READER: Vasculitis is an inflammation of the blood vessels. This inflammation can be severe enough to reduce blood flow to tissues and organs. We don't know for sure what causes it, but scientists believe it is an autoimmune disease.