[1] It is a slow viral infection of the brain characterized by chronic encephalitis, usually manifesting between 8–19 years of age.
In children with congenital rubella infection the deficits remain stable; neurological deterioration after the first few years of life is not believed to occur.
CT may show ventricular enlargement due to cerebellar atrophy and white matter disease.
[citation needed] Although no specific treatment exists, the disease can be managed with anticonvulsants, physiotherapy, etc.
[citation needed] PRP is very rare and similar to SSPE but without intracellular inclusion bodies.