title: Clonidine and psychophysical pain.
mesh_terms: D003000:Clonidine / Q000494:pharmacology* / Q000627:therapeutic use; D006801:Humans; D010146:Pain / Q000188:drug therapy* / Q000503:physiopathology; D012684:Sensory Thresholds / Q000187:drug effects
chemical_list: D003000:Clonidine