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Benign Rolandic Epilepsy: Atypical Features Are Very Common

Pediatric Neurology Division, Izaak Walton Killam Hospital for Children, and the Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada

Peter R. Camfield, MD, FRCPC

Pediatric Neurology Division, Izaak Walton Killam Hospital for Children, and the Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada

Kevin E. Gordon, MD, MS, FRCPC

Pediatric Neurology Division, Izaak Walton Killam Hospital for Children, and the Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada

Joseph M. Dooley, MD, FRCPC

Pediatric Neurology Division, Izaak Walton Killam Hospital for Children, and the Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada

Carol S. Camfield, MD, FRCPC

Pediatric Neurology Division, Izaak Walton Killam Hospital for Children, and the Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada

The objective of this study was to determine the frequency of atypical clinical and electrographic features in children with benign rolandic epilepsy. A retrospective case series design was employed in the setting of a tertiary care pediatric hospital. Forty-two children with benign rolandic epilepsy were seen through our neurology department between January 1, 1991, and December 31, 1993. Their charts were reviewed for atypical clinical features, imaging studies and results, total number of seizures at initial presentation and last follow-up, and use of anticonvulsants. Atypical clinical features included status epilepticus, developmental delay, daytime-only seizures, screaming as a seizure component, and postictal Todd's paresis. All children had at least one electroencephalogram, and these records were reviewed for atypical electrographic features such as unusual location, atypical spike morphology, and abnormal background. Atypical clinical features were seen in 50% of patients and atypical electrographic features in 31%. Computed tomographic scans were performed in 15 patients and were consistently normal. Treatment with anticonvulsant medication was initiated in 40%. Although patients with atypical features did not have an increased seizure frequency, they were more likely to undergo imaging studies (P < .01) and to be commenced on anticonvulsant medication (P < .02). Our experience suggests that atypical clinical and electrographic features are the rule rather than the exception in benign rolandic epilepsy. Further work must be done to develop a reliable definition of this common entity. (J Child Neurol 1995;10:455-458).

Journal of Child Neurology, Vol. 10, No. 6, 455-458 (1995)
DOI: 10.1177/088307389501000606


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