Subacute Sclerosing Panencephalitis: A typical case but nearly misdiagnosed.

2015 
Abstract Subacute sclerosing panencephalitis (SSPE) is a rare progressive, invariably fatal long-term complication of measles infection. It can manifest three to ten years after the acute infection. It results from mutation in the measles virus protein, and inappropriate immune response. We report the case of a 12 year old adolescent with no past history of measles; but in whom the diagnosis of SSPE was made on the basis of the clinical presentation, electroencephalogram results and the detection of anti measles antibodies in cerebrospinal fluid. SSPE should therefore be considered, in a patient with cognitive impairment and myoclonus in a context where measles is not rare even in the absence of history of measles. Resume La panencephalite sclerosante subaigue (PESS) est une complication a long terme de la rougeole. C’est une complication rare, mais invariablement fatale. Elle se manifeste trois a dix ans apres l’infection aigue. Elle resulte d’une mutation dans la proteine de virus de la rougeole associee a une reponse immunitaire inappropriee. Nous rapportons le cas d'une adolescente de 12 ans sans antecedents de rougeole; mais chez qui le diagnostic de PESS a ete fait sur la base de la presentation clinique, des resultats de l’electroencephalogramme et de la detection des anticorps anti-rougeoleux dans le liquide cephalorachidien. Le diagnostic de PESS devrait etre evoque chez un patient souffrant de troubles cognitifs et de myoclonies dans tout contexte ou la rougeole n’est pas rare, meme en l'absence d’antecedents de rougeole.
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