<Table> <Tr> <Th colspan="2"> Tay -- Sachs disease </Th> </Tr> <Tr> <Th> Synonyms </Th> <Td> GM2 gangliosidosis , hexosaminidase A deficiency </Td> </Tr> <Tr> <Td colspan="2"> </Td> </Tr> <Tr> <Td colspan="2"> Cherry - red spot as seen in the retina in Tay -- Sachs disease . The fovea 's center appears bright red because it is surrounded by a whiter than usual area . </Td> </Tr> <Tr> <Th> Specialty </Th> <Td> Medical genetics </Td> </Tr> <Tr> <Th> Symptoms </Th> <Td> Initially : Decreased ability to turn over , sit , or crawl Later : Seizures , hearing loss , inability to move </Td> </Tr> <Tr> <Th> Usual onset </Th> <Td> Three to six months of age </Td> </Tr> <Tr> <Th> Duration </Th> <Td> Long term </Td> </Tr> <Tr> <Th> Types </Th> <Td> Infantile , juvenile , late - onset </Td> </Tr> <Tr> <Th> Causes </Th> <Td> Genetic ( autosomal recessive ) </Td> </Tr> <Tr> <Th> Diagnostic method </Th> <Td> Testing blood hexosaminidase A levels , genetic testing </Td> </Tr> <Tr> <Th> Differential diagnosis </Th> <Td> Sandhoff disease , Leigh syndrome , neuronal ceroid lipofuscinoses </Td> </Tr> <Tr> <Th> Treatment </Th> <Td> Supportive care , psychosocial support </Td> </Tr> <Tr> <Th> Prognosis </Th> <Td> Death often occurs in early childhood </Td> </Tr> <Tr> <Th> Frequency </Th> <Td> Rare in the general population </Td> </Tr> </Table>
<Table> <Tr> <Th colspan="2"> Tay -- Sachs disease </Th> </Tr> <Tr> <Th> Synonyms </Th> <Td> GM2 gangliosidosis , hexosaminidase A deficiency </Td> </Tr> <Tr> <Td colspan="2"> </Td> </Tr> <Tr> <Td colspan="2"> Cherry - red spot as seen in the retina in Tay -- Sachs disease . The fovea 's center appears bright red because it is surrounded by a whiter than usual area . </Td> </Tr> <Tr> <Th> Specialty </Th> <Td> Medical genetics </Td> </Tr> <Tr> <Th> Symptoms </Th> <Td> Initially : Decreased ability to turn over , sit , or crawl Later : Seizures , hearing loss , inability to move </Td> </Tr> <Tr> <Th> Usual onset </Th> <Td> Three to six months of age </Td> </Tr> <Tr> <Th> Duration </Th> <Td> Long term </Td> </Tr> <Tr> <Th> Types </Th> <Td> Infantile , juvenile , late - onset </Td> </Tr> <Tr> <Th> Causes </Th> <Td> Genetic ( autosomal recessive ) </Td> </Tr> <Tr> <Th> Diagnostic method </Th> <Td> Testing blood hexosaminidase A levels , genetic testing </Td> </Tr> <Tr> <Th> Differential diagnosis </Th> <Td> Sandhoff disease , Leigh syndrome , neuronal ceroid lipofuscinoses </Td> </Tr> <Tr> <Th> Treatment </Th> <Td> Supportive care , psychosocial support </Td> </Tr> <Tr> <Th> Prognosis </Th> <Td> Death often occurs in early childhood </Td> </Tr> <Tr> <Th> Frequency </Th> <Td> Rare in the general population </Td> </Tr> </Table>
what type of genetic disorder is tay sachs
what type of genetic disorder is tay sachs
autosomal recessive
autosomal recessive