title: A history of pain relief.
mesh_terms: D000700:Analgesics / Q000266:history; D049672:History, 19th Century; D049673:History, 20th Century; D049690:History, Ancient; D049691:History, Medieval; D006801:Humans; D010146:Pain / Q000266:history* / Q000523:psychology; D059408:Pain Management; D010946:Plants, Medicinal; D012068:Religion and Medicine
chemical_list: D000700:Analgesics