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Published on: May 31, 2016
Fatigue in MS is related to sympathetic vasomotor dysfunction
P Flachenecker1, A Rufer, I Bihler
1Department of Neurology, Julius-Maximilians-Universität, Würzburg, Germany. peter.flachenecker@surfeu.de
Neurology
|September 25, 2003
Summary
Autonomic nervous system dysfunction in multiple sclerosis (MS) is linked to fatigue. Specific sympathetic vasomotor issues may cause this, suggesting targeted treatments could help manage MS fatigue.
Area of Science:
- Neurology
- Autonomic Neuroscience
- Cardiovascular Physiology
Background:
- Multiple sclerosis (MS) is a chronic neurological disease affecting the central nervous system.
- Fatigue is a common and debilitating symptom in patients with multiple sclerosis.
- Autonomic nervous system (ANS) dysfunction is increasingly recognized in MS, but its specific contribution to fatigue is not fully understood.
Purpose of the Study:
- To investigate the relationship between autonomic function test results and fatigue levels in patients with multiple sclerosis.
- To explore potential mechanisms underlying MS-associated fatigue, focusing on autonomic responses.
Main Methods:
- Sixty patients diagnosed with multiple sclerosis were enrolled in the study.
- Standard autonomic function tests and heart rate variability (HRV) measures were performed.
- Results were correlated with validated scales assessing fatigue: the Fatigue Severity Scale (FSS) and the Modified Fatigue Impact Scale (MFIS).
Main Results:
- Autonomic responses in MS patients showed a correlation with reported fatigue levels.
- The observed autonomic pattern resembled a hypoadrenergic orthostatic response.
- Findings suggest a possible sympathetic vasomotor lesion with preserved vagal heart control contributing to fatigue.
Conclusions:
- Autonomic dysfunction, particularly sympathetic vasomotor impairment, is significantly associated with fatigue in multiple sclerosis.
- The findings support the hypothesis that specific lesions in the sympathetic nervous system contribute to MS-related fatigue.
- Further research into therapeutic strategies targeting sympathetic dysfunction for managing MS-associated fatigue is warranted.
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