<prompt> Answer this question truthfullyWhat is the main symptomatic difference between cryoglobulinemic vasculitis and Henoch-Schonlein purpura?  <response>: <reason> The main symptomatic difference between cryoglobulinemic vasculitis and Henoch-Schonlein purpura is the absence of gastrointestinal symptoms in cryoglobulinemic vasculitis. 