title: Polymyositis presenting with chronic progressive distal muscular weakness.
mesh_terms: D004576:Electromyography; D005260:Female; D006801:Humans; D008875:Middle Aged; D009132:Muscles / Q000473:pathology*; D009220:Myositis / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology; D011241:Prednisone / Q000627:therapeutic use
chemical_list: D011241:Prednisone