Objective To investigate the effects of emodin on neuropathic pain induced by chronic constriction injury. Methods A total of 108 SD rats were randomly divided into sham group,model group,pregabalin group( 15 mg/kg),and high-,moderate-,low-dosage emodin groups( 100,50 and 25 mg/mg). Spontaneous pain scores,von Frey hair test,cold plate test,hot plate test and pin prick test were applied to evaluate the effect of emodin on spontaneous pain,mechanical withdrawal threshold,paw cold allodynia,paw withdraw therm...