GSS is a very rare TSE, making its genetic origin nearly impossible to determine. It is also challenging to find any patients with GSS, as the disease tends to be underreported, due to its clinical similarity to other diseases, and has been found in only a few countries. In 1989, the first mutation of the prion protein gene was identified in a GSS family. The largest of these families affected by GSS is the Indiana Kindred, spanning over 8 generations, and includes over 3,000 people, with 57 individuals known to be affected. GSS was later realized to have many different gene mutation types, varying in symptom severity, timing and progression. Doctors in different parts of the world are in the process of uncovering more generations and families who have the mutation. Notes
External links
Gerstmann–Sträussler–Scheinker syndrome, MedicineNet.com
Pemphigus erythematosus  is simply a localized form of pemphigus foliaceus with features of  lupus erythematosus. See also
Pemphigus
List of cutaneous conditions
List of conditions caused by problems with junctional proteins

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