That explains it.
Years ago, when I was a medical student trying to earn a living, I learned "blind" typing. (at that time you actually used a type-writer to type hand-written papers that were given to me by graduate students).

When computers became the norm, this skill became very handy. And it was a blessing when I was very ill, could hardly talk, nor see what I was typing.
It became the major way I could communicate with people, including at times my own family. Even now when I have less good days in which I lie in bed and can hardly talk, my husband brings me my lap top so I can let him know what I need.

This just shows the different ways in which this illness affects each of us, and the way we learn to live and adjust to it, based on our specific needs and previous skills, as well as those we acquire to overcome our limitations.