It's mostly sporatic, but there is 10% of cases that it's heredity. My Mom passed Nov 2001 from it, and her sister passed the year before from it.
There are also two types, can't remember the names....so long but one starts upper body, and progresses really fast, they loose their voice first but can still walk (like my Mom).
With my Aunt, she could talk pretty much too the end, but was unable to walk about 1.5 years, her's went slow. My Mom was diagnosed in Feb 2001, passed Nov 2001.
I'm hear too, my first time here, but I've been through it too if ya need to talk.
Gin
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