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Excessive daytime sleepiness in myotonic dystrophy
F Giubilei1, G Antonini, S Bastianello
1Department of Neurological Sciences, University La Sapienza, Rome, Italy.
Journal of the Neurological Sciences
|June 29, 1999
Summary
Magnetic resonance imaging (MRI) in myotonic dystrophy (MD) patients revealed corpus callosum (CC) atrophy may correlate with excessive daytime sleepiness (EDS). Specifically, reduced anterior CC area was linked to EDS in MD patients.
Area of Science:
- Neurology
- Sleep Medicine
- Medical Imaging
Background:
- Myotonic dystrophy (MD) is a multisystem disorder.
- Excessive daytime sleepiness (EDS) is a common symptom in MD.
- The underlying causes of EDS in MD are not fully understood.
Purpose of the Study:
- To investigate the correlation between MRI abnormalities and EDS in MD patients.
- To evaluate the influence of nocturnal breathing and sleep morphology on EDS.
Main Methods:
- Ten MD patients underwent polysomnography, multiple sleep latency test (MSLT), and MRI.
- Ten healthy controls were used for comparison.
- MRI data analyzed for corpus callosum (CC) atrophy and white matter hyperintensities.
Main Results:
- MD patients had significantly lower mean MSLT values than controls.
- Five out of ten MD patients exhibited pathological EDS.
- A correlation was found between reduced anterior CC area and lower MSLT values.
Conclusions:
- Corpus callosum (CC) atrophy may occur in myotonic dystrophy (MD) patients.
- The anterior area of the CC may be associated with excessive daytime sleepiness (EDS) in MD.
- Further research is needed to elucidate the mechanisms linking CC integrity and sleep disturbances in MD.