fals vs als, triggers, motor neuron disease
My dad has had motor neuron disease for the past about 5 years, he is now unable to walk or use one arm. The doctors are not saying its als yet, just motor neuron disease that could become als. Does anyone know if there's a reason why aren't wanting to say it's als, is it possible its not?
Does anyone think there could be a link between smoking or drinking free radical damage as a trigger for als? As people talk of possible triggers, ie metals, are they speaking of long term exposure or recent exposure?
I also am confused about the sporadic vs genetic als. I have read 90% is sporadic and 10% genetic, but I have also read that only 20% of the genetic or fals can be positive with 80% possibly unknown on a gene not yet discovered. Wouldn't that mean that 80% of the 90% of sporadic could be genetic?