The present invention provides a therapeutic agent for neuropathic pain having an excellent treating effect on neuropathic pain, which is an intractable disorder. More specifically, the present invention provides a therapeutic agent for neuropathic pain, comprising a peripheral benzodiazepine receptor antagonist (especially, PK11195) as an active ingredient a pharmaceutical composition for treating neuropathic pain, comprising a peripheral benzodiazepine receptor antagonist as an active ingredient a method for treating neuropathic pain using a peripheral benzodiazepine receptor antagonist and the like.