Treatment of phantom pain:

Phantom pain refers to a condition where a patient whose leg has been amputated, for example, feels an acute pain running from the edge of the amputation to the (non-existing) toe.  In this sense "phantom" means a ghost or illusion.

According to clinical data in the U.S., there are reports that pain and frequency of pain attacks in 60% to 80% of patients could be relieved by injecting Botox into the muscle located at the edge of amputation.