title: Systemic causes of headache.
mesh_terms: D000752:Anemia, Pernicious / Q000150:complications; D001794:Blood Pressure; D001929:Brain Edema / Q000150:complications; D001932:Brain Neoplasms / Q000150:complications; D002560:Cerebrovascular Circulation; D005334:Fever / Q000150:complications / Q000503:physiopathology; D013700:Giant Cell Arteritis / Q000150:complications; D006261:Headache / Q000209:etiology* / Q000503:physiopathology; D006801:Humans; D007003:Hypoglycemia / Q000150:complications; D000860:Hypoxia / Q000150:complications; D007244:Infectious Mononucleosis / Q000150:complications; D007427:Intracranial Pressure; D010673:Pheochromocytoma / Q000150:complications; D011453:Prostaglandins / Q000502:physiology
chemical_list: D011453:Prostaglandins