The present invention relates to a method of treating and/or preventing neuropathic pain, comprising administering calcitonin continuously. The present invention can provide a drug effective for the treatment of various neuropathic pains.Providing a drug having an action effective on neuropathic pain and having low toxicity.An agent for treating and/or preventing neuropathic pain comprising calcitonin, particularly elcatonin, as an active ingredient, wherein calcitonin is administered in an amount not altering serum calcium values, and use of calcitonin, particularly elcatonin, for producing an agent for treating and/or preventing neuropathic pain.
