Juvenile Tay-Sachs disease usually develops in children between the ages of two and ten. With this form of the disease, the gene mutation takes time to mature. For this reason, juveniles with Tay-Sachs present as healthy until symptoms develop. Typically, symptom development is more mild, at least at first, than those with the infantile form. Unfortunately, though, individuals are still too young at this age to easily recover from the damage that is done by the gene mutation.

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