Фантомные боли. http://ru.wikipedia.org/wiki/%D0%91%D0%BE%D0%BB%D1%8C#.D0.A4.D0.B0.D0.BD.D1.82.D0.BE.D0.BC.D0.BD.D1.8B.D0.B5_.D0.B1.D0.BE.D0.BB.D0.B8