What is the theme in Nobody Nowhere: The Extraordinary Autobiography of an Autistic by Donna Williams?

The challenges of autism is the main theme in this story. Donna Williams' first memory is around three years of age. She recalls an all-white existence that, when she looked closely, was comprised of billions of dots. This was her reality and what she saw. However, she did not see the disapproval of her mother who did not understand her strange behavior. However, the slapping, hair-pulling, kicking, and name-calling did not make that all-white existence disappear. The slap to Donna was just an interruption in her world but it neither changed nor improved her abilities to function in the real world.