title: A centennial review of neurasthenia.
mesh_terms: D005060:Europe; D005221:Fatigue; D006801:Humans; D009440:Neurasthenia / Q000139:chemically induced / Q000145:classification / Q000175:diagnosis / Q000209:etiology / Q000235:genetics / Q000378:metabolism / Q000628:therapy; D011602:Psychophysiologic Disorders / Q000209:etiology; D011613:Psychotherapy; D014481:United States; D014944:World Health Organization