Psychogenic factors in headache.
D003291:Conversion Disorder / Q000150:complications; D003702:Delusions / Q000150:complications; D003863:Depression / Q000150:complications; D006261:Headache / Q000209:etiology / Q000523:psychology*; D006801:Humans; D006998:Hypochondriasis / Q000150:complications; D008881:Migraine Disorders / Q000209:etiology / Q000523:psychology; D009119:Muscle Contraction; D011602:Psychophysiologic Disorders; D013315:Stress, Psychological; D014653:Vascular Headaches / Q000209:etiology / Q000523:psychology