Subacute sclerosing panencephalitis (SSPE) is a progressive, fatal disease of the central nervous
system caused by a persistent measles virus in the brain. It is clinically characterized by insidious
onset of intellectual deterioration and behavioral changes followed by myoclonic jerks and eventually
complete neurologic deterioration. In about 10% of patients, the clinical manifestations of SSPE are
not typical and that may cause a delay in the diagnosis. We report here 3 cases of SSPE with atypical
presentations. Bilateral vision loss, hemiparesis, ataxia and acute encephalopathy with focal seizures
were respectively the presenting symptoms at the onset of disease. The typical periodic EEG complexes
in two patients and positive CSF measles IgG antibody led to the diagnosis of SSPE.