title: Development of heart valve lesions during methysergide therapy.
mesh_terms: D006349:Heart Valve Diseases / Q000139:chemically induced*; D006801:Humans; D008297:Male; D008784:Methysergide / Q000009:adverse effects* / Q000627:therapeutic use; D008875:Middle Aged; D008881:Migraine Disorders / Q000188:drug therapy; D008946:Mitral Valve Stenosis / Q000139:chemically induced; D014264:Tricuspid Valve Stenosis / Q000139:chemically induced
chemical_list: D008784:Methysergide