What is the rarest heriditery disease in the world?!

There are many so, it would be difficult to choose only one!.
HHT ( Osler-Weber-Rendu) !.
Any disease that has 3 names to it are considered rare, hereditary or life-threatening!. For example; Lou-Gehrigs-Disease
http://www!.rarediseases!.org/search/rdbli!.!.!.
simply click onto the disease that you are interested in!. They are in alphabetical order!.Www@Answer-Health@Com

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There's a whole site of them!.

http://www!.hon!.ch/HONselect/RareDiseases!.!.!.Www@Answer-Health@Com

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Infitago!? a skin disease!.Www@Answer-Health@Com

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