Meet Tarkyn. Tarkyn is 7 years old. Tarkyn was diagnosed with Autism and ADHD at age 4. Tarkyn loves to do everything fast and be on the move. Tarkyn enjoys riding his bike or jumping on the trampoline with his friends. Tarkyn loves watching movies and reading books and would love to visit Hogwarts School of Witchcraft and Wizardry.