title: Methysergide induced mitral valvular insufficiency.
mesh_terms: D006801:Humans; D008297:Male; D008784:Methysergide / Q000009:adverse effects* / Q000627:therapeutic use; D008875:Middle Aged; D008881:Migraine Disorders / Q000188:drug therapy; D008944:Mitral Valve Insufficiency / Q000139:chemically induced*
chemical_list: D008784:Methysergide