Below Is A Re-posted Article Written By CNN. “The disease that led to actor-director Harold Ramis’ death is one of an often-mysterious family of maladies that can starve organs and cause painful tissue damage. Vasculitis develops when the body’s immune system turns on its network of veins and arteries. Blood vessels become inflamed, restricting the… Continue reading Harold Ramis: The Famous Celebrity Who Brought About Awareness Of Vasculitis.