No, you would have to be diagnosed with it first...Back in 1986, I had a very good friend that I noticed might have dyslexia.
How I came to that conclusion was looking at his set of encyclopaedias and as you might know, each volume is numbered.
I saw #21 where #12 should be and vice-versa, and #31 and #13 etc. etc. etc....He just looked in disbelief at me and lamented the fact that no one has ever pointed out to him anything like this before, not even in school...He scheduled an appointment with his doctor who confirmed it for him.