Cognitive fatigue in multiple sclerosis: findings from a two-wave screening project

Journal of the Neurological Sciences
Yoram Barak, Anat Achiron

Abstract

Multiple sclerosis (MS) patients commonly suffer from fatigue and define it as one of their most disabling symptom profoundly disrupting their lives. However, the relationship of fatigue to cognitive functions and its impact on quality of life have not been widely studied. To define (1) "cognitive fatigue", (2) survey its frequency and (3) characterize severity and impact on quality of life in MS patients in the first 10 years of the disease. A two-wave design was utilized to enrich the studied population in subjects whose fatigue is significant. In the first wave, fatigue was measured by the self-reported fatigue severity scale (FSS) in randomly selected MS patients from our computerized database. Patients responding to the 9th item of the FSS i.e., "Fatigue interferes with my work, family, or social life" by a grade of 3 or higher (of 7) were further assessed (wave two) by the fatigue impact scale (FIS) and the RAYS quality of life questionnaire. Of the 259 patients that completed the first-wave screening, 158 patients (61%, 118 females, mean age 41.1+/-9.2 years, mean disease duration 6.2+/-5.5 years) satisfied the additional criterion and were defined to suffer from significant fatigue. The great majority of these patients-...Continue Reading

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Dec 4, 2010·Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition·Roee HoltzerJoe Verghese
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