The present invention provides therapeutic agents for neuropathic pain, the agents having excellent therapeutic effects on neuropathic pain, which is an intractable disorder. More specifically, the invention provides therapeutic agents for neuropathic pain comprising, as the active ingredient, an opioid receptor antagonist (particularly naloxone, naltrexone, naloxonazine, naltrindole, etc.), pharmaceutical compositions for treating neuropathic pain comprising an opioid receptor antagonist as the active ingredient, and a method for treating neuropathic pain using opioid receptor antagonists.
Therapeutic Agent for Neuropathic Pain