Progressive epilepsy - intellectual deficit Finnish type

PEHO syndrome (Progressive encephalopathy with Edema, Hypsarrhythmia and Optic atrophy) is an autosomal recessive and dominate, progressive neurodegenerative disorder that starts in the first few weeks or months of life. Early symptoms include infantile spasms, hyparrhythmia, and seizures, and optic atrophy. [Source: Wikipedia ]