Seizures in patients with multiple sclerosis seen at Mayo Clinic, Rochester, Minn, 1990-1998

P. A. Nyquist, Gregory D Cascino, M. Rodriquez

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Objective: To evaluate seizure type, electroencephalographic findings, and response to antiepileptic drug (AED) treatment in patients with multiple sclerosis (MS) and coexistent seizure activity. Patients and Methods: We reviewed the medical records of all patients seen at the Mayo Clinic in Rochester, Minn, with the diagnosis of MS and seizures between 1990 and 1998. Results: During the study period, 5715 patients with MS were identified. Of these 5715 patients, 51 (0.89%) experienced seizure activity. The most common ictal behavior was a generalized tonic-clonic seizure in 35 patients (68.6%). Simple or complex partial seizures occurred in 11 patients (21.6%), and 18 patients (35.3%) had only 1 seizure episode. Focal motor status epilepticus, ie, epilepsia partialis continua, occurred in 3 patients (5.9%) and was associated with cognitive impairment. In 37 patients (72.5 %), the initial seizure presentation was after the diagnosis of MS. A seizure resulted in the diagnosis of MS or occurred before the diagnosis of MS but after other symptoms or signs of demyelinating disease in 14 patients (27.4 %). Electroencephalography was performed in 43 patients. Electroencephalographic findings included diffuse or localized nonspecific background slowing in 19 patients (44.2%), unilateral or bilateral frontotemporal spike discharges in 9 (20.9%), generalized atypical spike-and-wave or multifocal independent epileptiform alterations in 6 (14.0%), and normal results in 11 (25.6%). Of the 45 patients who received AED therapy, 35 (77.8%) had an excellent response, ie, they were seizure free. Five treated patients (11.1 %) had an intractable seizure disorder. Conclusion: Most of the patients with MS who experienced seizure activity had a benign and transient disorder that was responsive to AED treatment or required no therapy.

Original languageEnglish (US)
Pages (from-to)983-986
Number of pages4
JournalMayo Clinic Proceedings
Volume76
Issue number10
StatePublished - 2001

Fingerprint

Multiple Sclerosis
Seizures
Anticonvulsants
Epilepsia Partialis Continua
Status Epilepticus
Demyelinating Diseases
Signs and Symptoms
Medical Records
Electroencephalography
Epilepsy
Therapeutics
Stroke

Keywords

  • AED = antiepileptic drug
  • EDSS = Expanded Disability Status Scale
  • EEG = electroencephalography
  • EPC = epilepsia partialis continua
  • MRI = magnetic resonance imaging
  • MS = multiple sclerosis

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Seizures in patients with multiple sclerosis seen at Mayo Clinic, Rochester, Minn, 1990-1998. / Nyquist, P. A.; Cascino, Gregory D; Rodriquez, M.

In: Mayo Clinic Proceedings, Vol. 76, No. 10, 2001, p. 983-986.

Research output: Contribution to journalArticle

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abstract = "Objective: To evaluate seizure type, electroencephalographic findings, and response to antiepileptic drug (AED) treatment in patients with multiple sclerosis (MS) and coexistent seizure activity. Patients and Methods: We reviewed the medical records of all patients seen at the Mayo Clinic in Rochester, Minn, with the diagnosis of MS and seizures between 1990 and 1998. Results: During the study period, 5715 patients with MS were identified. Of these 5715 patients, 51 (0.89{\%}) experienced seizure activity. The most common ictal behavior was a generalized tonic-clonic seizure in 35 patients (68.6{\%}). Simple or complex partial seizures occurred in 11 patients (21.6{\%}), and 18 patients (35.3{\%}) had only 1 seizure episode. Focal motor status epilepticus, ie, epilepsia partialis continua, occurred in 3 patients (5.9{\%}) and was associated with cognitive impairment. In 37 patients (72.5 {\%}), the initial seizure presentation was after the diagnosis of MS. A seizure resulted in the diagnosis of MS or occurred before the diagnosis of MS but after other symptoms or signs of demyelinating disease in 14 patients (27.4 {\%}). Electroencephalography was performed in 43 patients. Electroencephalographic findings included diffuse or localized nonspecific background slowing in 19 patients (44.2{\%}), unilateral or bilateral frontotemporal spike discharges in 9 (20.9{\%}), generalized atypical spike-and-wave or multifocal independent epileptiform alterations in 6 (14.0{\%}), and normal results in 11 (25.6{\%}). Of the 45 patients who received AED therapy, 35 (77.8{\%}) had an excellent response, ie, they were seizure free. Five treated patients (11.1 {\%}) had an intractable seizure disorder. Conclusion: Most of the patients with MS who experienced seizure activity had a benign and transient disorder that was responsive to AED treatment or required no therapy.",
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N2 - Objective: To evaluate seizure type, electroencephalographic findings, and response to antiepileptic drug (AED) treatment in patients with multiple sclerosis (MS) and coexistent seizure activity. Patients and Methods: We reviewed the medical records of all patients seen at the Mayo Clinic in Rochester, Minn, with the diagnosis of MS and seizures between 1990 and 1998. Results: During the study period, 5715 patients with MS were identified. Of these 5715 patients, 51 (0.89%) experienced seizure activity. The most common ictal behavior was a generalized tonic-clonic seizure in 35 patients (68.6%). Simple or complex partial seizures occurred in 11 patients (21.6%), and 18 patients (35.3%) had only 1 seizure episode. Focal motor status epilepticus, ie, epilepsia partialis continua, occurred in 3 patients (5.9%) and was associated with cognitive impairment. In 37 patients (72.5 %), the initial seizure presentation was after the diagnosis of MS. A seizure resulted in the diagnosis of MS or occurred before the diagnosis of MS but after other symptoms or signs of demyelinating disease in 14 patients (27.4 %). Electroencephalography was performed in 43 patients. Electroencephalographic findings included diffuse or localized nonspecific background slowing in 19 patients (44.2%), unilateral or bilateral frontotemporal spike discharges in 9 (20.9%), generalized atypical spike-and-wave or multifocal independent epileptiform alterations in 6 (14.0%), and normal results in 11 (25.6%). Of the 45 patients who received AED therapy, 35 (77.8%) had an excellent response, ie, they were seizure free. Five treated patients (11.1 %) had an intractable seizure disorder. Conclusion: Most of the patients with MS who experienced seizure activity had a benign and transient disorder that was responsive to AED treatment or required no therapy.

AB - Objective: To evaluate seizure type, electroencephalographic findings, and response to antiepileptic drug (AED) treatment in patients with multiple sclerosis (MS) and coexistent seizure activity. Patients and Methods: We reviewed the medical records of all patients seen at the Mayo Clinic in Rochester, Minn, with the diagnosis of MS and seizures between 1990 and 1998. Results: During the study period, 5715 patients with MS were identified. Of these 5715 patients, 51 (0.89%) experienced seizure activity. The most common ictal behavior was a generalized tonic-clonic seizure in 35 patients (68.6%). Simple or complex partial seizures occurred in 11 patients (21.6%), and 18 patients (35.3%) had only 1 seizure episode. Focal motor status epilepticus, ie, epilepsia partialis continua, occurred in 3 patients (5.9%) and was associated with cognitive impairment. In 37 patients (72.5 %), the initial seizure presentation was after the diagnosis of MS. A seizure resulted in the diagnosis of MS or occurred before the diagnosis of MS but after other symptoms or signs of demyelinating disease in 14 patients (27.4 %). Electroencephalography was performed in 43 patients. Electroencephalographic findings included diffuse or localized nonspecific background slowing in 19 patients (44.2%), unilateral or bilateral frontotemporal spike discharges in 9 (20.9%), generalized atypical spike-and-wave or multifocal independent epileptiform alterations in 6 (14.0%), and normal results in 11 (25.6%). Of the 45 patients who received AED therapy, 35 (77.8%) had an excellent response, ie, they were seizure free. Five treated patients (11.1 %) had an intractable seizure disorder. Conclusion: Most of the patients with MS who experienced seizure activity had a benign and transient disorder that was responsive to AED treatment or required no therapy.

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KW - EDSS = Expanded Disability Status Scale

KW - EEG = electroencephalography

KW - EPC = epilepsia partialis continua

KW - MRI = magnetic resonance imaging

KW - MS = multiple sclerosis

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