Review of systems should seek symptoms of causative disorders, including purpuric rash, abdominal pain, and arthralgias (immunoglobulin A-associated vasculitis [Henoch-Schönlein purpura]); intermittent scrotal masses, groin swelling, or both (inguinal hernia); fever and parotid gland swelling (mumps orchitis); and flank pain or hematuria (renal calculus).