Electrical sensation during Tai-Chi practice as the first manifestation of multiple sclerosis

We report a patient with a 3-year history of brief episodes of electrical sensations over her back and upper limbs that occurred during Tai-Chi practicing. This appearance of Lhermitteʹs sign was later followed by additional neurologic symptoms, and the patient was diagnosed as sufferring from multiple sclerosis. Though the patient related the Lhermitteʹs sign to her ability to achieve full relaxation in Tai-Chi exercises, we think it was the first manifestation of the disease.