When I was in grade school I was diagnosed with severe dyslexia and ADD. In actual fact the psychologist reckoned it was so bad that I should quit school and go and do something else as I was never going to pass. Apart from the atrocious spelling I've never had a problem (I have two degrees). Since my time at school I've gone on and done my PPL and am in the process of obtaining my CPL and its NEVER been a problem. Just goes to show you what doctors know