It is a learning disability that has blighted everyone from Spiderman to royalty.
British actor Tom Holland — who plays the webbed super hero — and Princess Beatrice, who is ninth in line to the throne, have both spoken about their difficulties in overcoming dyslexia when they were younger.
And they are not alone in the celebrity world either, with Tom Cruise, Holly Willoughby, Keanu Reeves and Jennifer Aniston all revealing the challenges that having the condition presented them with.
Princess Beatrice, Prince Andrew's eldest daughter, found out she had dyslexia at the age of seven and has spoken candidly about her struggles with learning as a result.
