Vasculitis is a disease characterized by inflammation of blood vessels which carry oxygen to critical organs of the body. While treatment of vasculitis with disease-modifying anti-rheumatic drugs (DMARDs) and corticosteroids can be lifesaving, finding a drug regimen that reduces unwanted side effects is a difficult process. This is particularly true in children, since vasculitis is rarer in children, and most of the knowledge on vasculitis in children – and how to best treat it – stems from studies in adults.