Does a diagnosis of Dyslexia or a Learning Disability keep you from writing? NO!
Definition:
Dyslexia: a variable often familial learning disability involving difficulties in acquiring and processing language that is typically manifested by a lack of proficiency in reading, spelling, and writing. Merriam-Webster Online Dictionary.
Who in history was dyslexia?
Albert Einstein, Leonardo da Vinci, Pablo Picasso, Steven Spielberg, Tom Cruise, Richard Branson, Henry Winkler, Bill Gates, Charles Schwab, Fannie Flagg, Ben Fogle, Richard Ford, Lorin Morgan-Richards, Don Mullan, Fred Newman, Diamond Dallas Page, Dav Pilkey, Louis Rosenberg, Jules Verne, according to http://www.dyslexiaonline.com/basics/famous_dyslexics.html and https://en.wikipedia.org/wiki/List_of_people_diagnosed_with_dyslexia
Amazon.com How to Write Fiction