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Tay-Sachs disease is a fatal genetic disorder that affects the nervous system. It is caused by a deficiency of the enzyme hexosaminidase A (Hex A), which is responsible for breaking down a fatty substance called GM2 ganglioside. GM2 ganglioside accumulates in the brain and other tissues, causing progressive damage and eventually death.

Symptoms of Tay-Sachs disease

The symptoms of Tay-Sachs disease typically appear in infancy. The first signs are often a cherry-red spot in the eye, along with muscle weakness and a loss of coordination. As the disease progresses, infants may experience developmental delays, seizures, vision problems, and difficulty swallowing. Children with Tay-Sachs disease usually die by the age of 5.

Diagnosis of Tay-Sachs disease

Tay-Sachs disease is diagnosed with a blood test to measure the activity of Hex A. A prenatal test is also available to identify couples who are at risk of having a child with the disorder.

Treatment of Tay-Sachs disease

There is no cure for Tay-Sachs disease. Treatment is focused on managing the symptoms and supporting the child and family. Treatment may include:

* Medication to control seizures

* Physical therapy to help with muscle weakness

* Speech therapy to help with swallowing difficulties

* Vision therapy to help with vision problems

* Supportive care, such as hospice care, to help the child and family cope with the disease

Outlook for Tay-Sachs disease

The outlook for children with Tay-Sachs disease is grim. Most children die by the age of 5. However, with proper care, some children may live into their teens or even early adulthood.

Prevention of Tay-Sachs disease

Tay-Sachs disease is a genetic disorder that is passed down from parents to children. There is no way to prevent the disease, but couples who are at risk of having a child with the disorder can choose to undergo prenatal testing.