title: Paradoxical pain.
authors: P J
authors: PJ
authors: Hardy
mesh_terms: D004351:Drug Resistance; D006801:Humans; D009020:Morphine / Q000378:metabolism / Q000627:therapeutic use; D009294:Narcotics / Q000627:therapeutic use; D010146:Pain / Q000209:etiology*
chemical_list: D009294:Narcotics; D009020:Morphine