This is a relatively rare disorder, attested in patients who have had a limb amputated, and after a period of time they start feeling pain in the missing limb. The mechanism of this disorder is not very well known, but it seems that it involves centers of the spinal cord and possibly the brain. There are special surgeries placing electrodes in areas of the brain that can treat the problem in selected patients. Selective spinal cord areas may also be selectively destroyed (DREZ lesion – destruction of the posterior spinal cord entry zone), and results have been promising.