Diffuse paroxysmal and periodic discharges in subacute sclerosing panencephalitis (SSPE), have a specific temporo-spatial character in about 90%of cases. A random selection of 100 among 358 cases was performed in this study and the following results were obtained. Twelve cases showed no initial diffuse paroxysmal and periodic discharges but an atypical pattern consting in: 1) unilateral periodic activity (three cases); 2) bifrontal rhythmic delta activity (two cases); 3) epilepic discharges, one of which was absence (four cases); focal delta activity (one case); 5) normal EEG (two cases). One apparently benign case is also reported.
Among 41 children with SSPE, 23 had ocular abnormalities : in 9 cases they were found at the beginning of the disease, in 10 cases they were found during it course and in 4 cases they were present before neurological signs. The ocular involvement was bilateral in 83%of the cases and disclosed 16 retinitis, 4 pigment splinters of the posterior pole, 33 papillar abnormalities and 1 cortical blindness. Retinitis is the most typical lesion but can be misdiagnosed as a toxoplasmosis retinochoroiditis. Measles virus has been found in neuro-epithelium cells and in optic nerves ; it is defective and can escape the hoste immune response.
Panencxe9;phalite sclxe9;rosante subaiguxeb; rxe9;vxe9;lxe9;e par un xe9;tat de mal xe9;pileptique