title: Pathophysiology of pain.
mesh_terms: D002490:Central Nervous System / Q000187:drug effects / Q000502:physiology; D004723:Endorphins / Q000502:physiology*; D006801:Humans; D010146:Pain / Q000503:physiopathology*; D059408:Pain Management; D012701:Serotonin / Q000502:physiology
chemical_list: D004723:Endorphins; D012701:Serotonin