This was a really good question. I have a sister who is, umm, challenged. I look at my Mom's intelligence, I know, she has a different form of, intelligence and I mean no disrespect in my writing that, I know how terrible it sounds
I've wonder, gee, is this what is wrong with you, it seems, I have a hard time with the dumbest things, right down to writing something in the wrong place, say, an application, form, anything.......I now understand so much of this is nerves, anxiety.
Then, there are times, I feel something, but I can't explain how I feel. I couldn't put it on paper to save my butt, then someone else will come along and sum it up in one sentence.
Directions, forget about it........If someone ask me for directions, if I'm heading that way, I have them follow me, I would have them in timbuck two!
Mental illness is what some have, not who they are.