Juvenile hexosaminidase A deficiency. Symptoms may begin around age five, or may not occur until age 20-30. The disease is milder. Speech becomes slurred. The individual may have difficulty walking due to weakness, muscle cramps, and decreased coordination of movements.
Some individuals develop mental illness.
Many have changes in intellect, hearing, or vision. A can be performed on the blood, specially treated skin cells, or white blood cells. A present, while a victim of the disease will have none. There is no treatment for Tay-Sachs disease. Sadly, the prognosis for a child with classic Tay-Sachs disease is certain death.