The Fatigue Scale for Motor and Cognitive Functions: a recently validated instrument to assess MS-related fatigue

Introduction: Fatigue is estimated to affect 75 to 95% of patients with MS. Assessment, however, is difficult as it is experienced subjectively and has to be differentiated from other disease factors. Instruments available today do not differentiate sufficiently between cognitive and physical aspects of fatigue and show methodological limitations. Objective: To develop a new fatigue instrument that provides reliable assessment of the different fatigue components. Methods: The Fatigue Scale for Motor and Cognitive Functions (FSMC) is a 20-item scale that can be administered in 5 minutes. It consists of a cognitiv…