title: Headache mechanisms.
mesh_terms: D001241:Aspirin / Q000627:therapeutic use; D011464:Epoprostenol / Q000009:adverse effects*; D006801:Humans; D007213:Indomethacin / Q000627:therapeutic use; D011453:Prostaglandins / Q000009:adverse effects*; D011458:Prostaglandins E / Q000009:adverse effects; D014653:Vascular Headaches / Q000139:chemically induced* / Q000188:drug therapy
chemical_list: D011453:Prostaglandins; D011458:Prostaglandins E; D011464:Epoprostenol; D001241:Aspirin; D007213:Indomethacin