Journal
MULTIPLE SCLEROSIS JOURNAL
Volume 26, Issue 7, Pages 751-764Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1352458519876032
Keywords
Fatigue; multiple sclerosis; brain; magnetic resonance imaging; depression
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Funding
- National Multiple Sclerosis Society [RG-1501-03141]
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Fatigue is one of the most debilitating symptoms in patients with multiple sclerosis (MS). Despite its clinical significance, the aetiology and pathophysiology of MS-related fatigue are not well understood. Current evidence and understanding of the neuroanatomical underpinnings of MS-related fatigue are reviewed in this article. The aims of this paper are to (1) review the findings of previous structural neuroimaging studies on MS-related fatigue and summarize consistent findings regarding brain circuitry associated with fatigue in MS, (2) contextualize these findings with the neurochemistry of the relevant circuits and (3) discuss future perspectives with regard to impact on fatigue management of MS patients and methodological challenges towards improved understanding of fatigue pathogenesis. The detailed understanding of the neuroanatomical underpinnings of fatigue might contribute to the identification of novel treatment targets and factors determining treatment resistance to drugs used in current clinical practice.
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