A psychophysiological phenomenon in which a person feels pain in a missing (amputated) limb or organ. Pain is often excruciating and debilitating. Phantom pain can be constant or occur in attacks, have the character of burning, scorching, feel like painful spasms or be similar to an electric shock. The nature of phantom pain is extremely complex and is a complex of changes in the nervous system at the level of damaged nerves of the limb, in the spinal cord and in the cerebral cortex. Moreover, changes at the cortical level are currently considered the main cause of phantom pain.