Primary headaches. An attempt at a classification.
D001008:Anxiety Disorders / Q000150:complications; D001932:Brain Neoplasms / Q000150:complications; D003863:Depression / Q000150:complications; D005260:Female; D006261:Headache / Q000145:classification* / Q000150:complications; D006801:Humans; D007427:Intracranial Pressure; D008297:Male; D008581:Meningitis / Q000150:complications; D008598:Menstruation; D008881:Migraine Disorders / Q000145:classification; D009765:Obesity / Q000150:complications; D011602:Psychophysiologic Disorders