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A rare form of this disease, known as Adult-Onset or Late-Onset Tay–Sachs disease, usually has its first symptoms during the 30s or 40s. In contrast to the other forms, late-onset Tay–Sachs disease is usually not fatal as the effects can stop progressing. It is frequently misdiagnosed.
Tay–Sachs disease is a rare autosomal recessive genetic disorder that causes a progressive deterioration of nerve cells and of mental and physical abilities that begins around six months of age and usually results in death by the age of four. It is the most common of the GM2 gangliosidoses.
The main members of this group are Niemann–Pick disease, Fabry disease, Krabbe disease, Gaucher disease, Tay–Sachs disease and metachromatic leukodystrophy. They are generally inherited in an autosomal recessive fashion, but notably Fabry disease is X-linked recessive .
Out of 604 monitored pregnancies where there was a prenatal diagnosis of Tay–Sachs disease, 583 pregnancies were terminated. Of the 21 pregnancies that were not terminated, 20 of the infants went on to develop classic infantile Tay–Sachs disease, and the 21st case progressed later to adult-onset Tay–Sachs disease.
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Tay–Sachs disease is a rare and usually fatal disease. Pages in category "Tay–Sachs disease" The following 4 pages are in this category, out of 4 total.
But the symptoms of adult-onset type 1, or LADA, can often resemble those of type 2 diabetes. “In general, adults with type 1 experience less severe symptoms than children,” Dr. Zonszein says ...
At that time, it was proposed that the late-infantile (Jansky–Bielschowsky), the juvenile (Spielmeyer–Vogt), and the adult form (Kufs) were quite different from Tay–Sachs disease with respect to chemical pathology and ultrastructure and also different from other forms of sphingolipidoses. [citation needed]