[A case of multiple sclerosis manifesting piano playing movement].

We report a case of 33-year-old man with multiple sclerosis, showing piano playing movement in both hands. His course of multiple sclerosis was remittent/progressive during 2 years and the clinical manifestation suggested the spinal cord involvement. On July 15, 1991, he was admitted with numbness of the right limbs, and then developed piano playing movement in both hands, more marked in the right side.