"ADHD an A-Z: Figuring It Out Step by Step" by Leanne Maskell is a comprehensive textbook that delves into the subject of Attention Deficit Hyperactivity Disorder (ADHD). Focused on the topics of Pediatrics, Psychopathology, and Mental Health, this book provides a detailed exploration of ADHD from a psychological and medical perspective. With a clear and informative writing style, the author offers valuable insights and practical strategies for understanding and managing ADHD. The book, published by Jessica Kingsley Publishers, is a valuable resource for those looking to gain a deeper understanding of this complex condition.