Table 2

Diagnostic criteria of SSPE47

Definitive: criteria 5 with three more criteria; probable: three of the five criteria.
1. ClinicalProgressive, subacute metal deterioration with typical signs like myoclonus
2. EEGPeriodic, stereotyped, high voltage discharges
3. Cerebrospinal fluidRaised gammaglobulin or oligoclonal pattern
4. Measles antibodiesRaised titre in serum (≥1:256) and/or cerebrospinal fluid (≥1:4)
5. Brain biopsySuggestive of panencephalitis