title: A bio-psycho-social investigation of headache activity in a chronic headache population.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006261:Headache / Q000523:psychology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000523:psychology*; D011379:Prognosis; D011603:Psychophysiology; D012959:Socioeconomic Factors