title: The chronic pain syndrome.
mesh_terms: D000700:Analgesics / Q000627:therapeutic use; D002908:Chronic Disease; D006801:Humans; D010146:Pain / Q000175:diagnosis / Q000188:drug therapy; D059408:Pain Management; D010148:Intractable Pain / Q000188:drug therapy; D010166:Palliative Care; D019966:Substance-Related Disorders; D013577:Syndrome
chemical_list: D000700:Analgesics