MS onset age and level of severity

[sbr487]

This is something that has been bugging me ...

My mom is a suspected MS case
I am an MS case

My mom issues mainly started around 45 or so
My issues started around 25

My mom at 65 is still stable (given her age)
Surprisingly, she has fatigue but no brain fog. I can make out
since her answers are generally very clear
At 40 I believe I have more MS issues then her ...

I will not go into more details ... but something tells me

1) if MS runs in families, the onset will earlier compared to previous generation
2) since onset is early, the issues are also more when comparing at the same age ...