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Subacute Sclerosing Panencephalitis (SSPE): An Insight Into the Diagnostic Errors From a Tertiary Care University Hospital

Department of Neurology and Department of Neurovirology, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India

A.B. Taly, MD, DM

Department of Neurology and Department of Neurovirology, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India, abtaly@ yahoo.com

S. Sinha, DM

Department of Neurology and Department of Neurovirology, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India

V. Ravi, MD

Department of Neurology and Department of Neurovirology, National Institute of Mental Health and Neurosciences (NIMHANS), Bangalore, India

Subacute sclerosing panencephalitis (SSPE) is a progressive disease caused by wild-type measles virus leading to premature death. Early diagnosis may help in medical interventions and counseling. The aim of this study was to ascertain diagnostic errors and their possible causes. Retrospective case record analysis of patients with subacute sclerosing panencephalitis, evaluated over a 10-year period, was performed. The following data were analyzed: initial symptoms and diagnosis, interval between onset of symptoms to diagnosis, and implications of delayed diagnosis. Among the 307 patients evaluated, initial diagnosis by various health care professionals was other than subacute sclerosing panencephalitis in 242 patients (78.8%). These included seizures, absence seizures, metachromatic leukodystrophy, Schilder's disease, cerebral palsy, hemiparkinsonism, Wilson's disease, vasculitis, spinocerebellar ataxia, motor neuron disease, nutritional amblyopia, tapetoretinal degeneration, catatonic schizophrenia, and malingering, among others. The interval between precise diagnosis and first reported symptom was 6.2 ± 11.3 months (range, 0.2-96 months; median, 3 months). Forty-four patients (14.3%) who had symptoms for more than 1 year before the precise diagnosis had a protracted course as compared to the rest of the cohort ( P = .0001). Early and accurate diagnosis of subacute sclerosing panencephalitis needs a high index of suspicion.

Key Words: diagnostic errors • SSPE • subacute sclerosing panencephalitis

Journal of Child Neurology, Vol. 22, No. 6, 683-688 (2007)
DOI: 10.1177/0883073807303999


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