Epilepsia partialis continua in relapsing-remitting multiple sclerosis: A possible distinct relapse phenotype

Area of Science:

• Neurology
• Neuroimmunology
• Epileptology

Background:

• Epilepsia partialis continua (EPC) is an uncommon manifestation in patients diagnosed with multiple sclerosis (MS).
• Understanding the specific clinical phenotypes of MS is crucial for effective patient management and treatment strategies.

Observation:

• A patient with relapsing-remitting MS experienced three distinct episodes of EPC.
• The EPC episodes were resistant to standard anti-seizure medications.
• Corticosteroid therapy proved effective in managing the EPC episodes.

Findings:

• Despite clinical episodes, 1.5 Tesla MRI scans did not reveal significant lesions attributable to EPC.
• The presumed lesions were likely small, involving the cortical or juxtacortical areas of the primary motor cortex.
• The patient's presentation demonstrated dissemination in space and time, characteristic of MS relapses.

Implications:

• EPC may represent a distinct relapse phenotype within the spectrum of multiple sclerosis.
• This finding suggests a potential role for immunomodulatory treatments, such as corticosteroids, in managing EPC in MS patients.
• Further research is warranted to elucidate the underlying mechanisms linking MS and EPC.