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[The EEG in multiple sclerosis (author's transl)]
Abstract:
An abnormal EEG was obtained in altogether 76% of cases in a series of 172 patients with multiple sclerosis. Among the patients with minor neurological defects and a shorter duration of illness, only 26% of the EEGs were abnormal, whereas abnormal recordings were found in a high percentage of bedridden patients with severe neurological disturbances, irrespective of the duration of the illness, i.e. in 83% and 85% of these patients, subdivided according to illness of under or over 10 years' duration, respectively. Hence, severity of multiple sclerosis rather than length of the disease appears to be reflected in an abnormal EEG. Definite prognostic information concerning life expectancy cannot be otained from the EEG. Organic brain syndrom were closely correlated with the severity of EEG changes. Epileptic manifestations were clinically observed in 5.23% of the patients, all of whom manifested pathological EEG recordings.
Insights
The severity of multiple sclerosis, not its duration, correlates with abnormal electroencephalogram (EEG) findings. Severe cases show significantly higher rates of abnormal EEGs, indicating EEG reflects disease impact.
Area of Science:
- Neurology
- Neurophysiology
Context:
- Multiple sclerosis (MS) is a chronic neurological disease.
- Electroencephalography (EEG) is a tool to measure brain activity.
Purpose:
- To investigate the correlation between EEG abnormalities and the severity and duration of multiple sclerosis.
- To determine the prognostic value of EEG in MS patients.
Summary:
- A study of 172 multiple sclerosis patients found 76% had abnormal EEGs.
- Abnormal EEGs were more prevalent in severely affected, bedridden patients (83-85%) than in those with minor defects (26%).
- EEG abnormalities correlate with MS severity, not disease duration, and are linked to organic brain syndromes and epilepsy.
Impact:
- EEG findings reflect the clinical severity of multiple sclerosis.
- EEG does not provide definitive life expectancy prognosis in MS.
- Abnormal EEGs are consistently observed in MS patients with epilepsy.