title: The causes of headache.
mesh_terms: D001037:Aphasia / Q000150:complications; D001932:Brain Neoplasms / Q000150:complications; D003276:Contraceptives, Oral / Q000009:adverse effects; D006259:Craniocerebral Trauma / Q000150:complications; D004967:Estrogens / Q000009:adverse effects; D006261:Headache / Q000134:cerebrospinal fluid / Q000209:etiology* / Q000503:physiopathology; D006429:Hemiplegia / Q000150:complications; D006632:Histamine / Q000009:adverse effects; D006801:Humans; D008881:Migraine Disorders / Q000139:chemically induced / Q000209:etiology / Q000378:metabolism; D014653:Vascular Headaches / Q000209:etiology
chemical_list: D003276:Contraceptives, Oral; D004967:Estrogens; D006632:Histamine