I was really impressed by 'Preferred Lies' by Graham Pryor. It is a speculative adventure set in the 1950s and 1960s and the adolescent narrator describes his discovery that he 'suffers' from ADHD. His perception of life, particularly as a child, rang true with me and will I'm sure with others having that condition.
Although a work of fiction the author only discovered that he had the condition in the later stages of his life and this novel is testament to how it can be a blessing once a creative outlet is discovered.