Emotional vulnerability of the antinociceptive system: relevance in psychosomatic headache.
D000818:Animals; D004644:Emotions; D005260:Female; D006261:Headache / Q000209:etiology / Q000523:psychology*; D006801:Humans; D010146:Pain / Q000503:physiopathology*; D011247:Pregnancy; D011602:Psychophysiologic Disorders