Michael Phelps was diagnosed with attention deficit hyperactivity disorder, or ADHD, when he was in sixth grade. The diagnosis came during his early school years in Maryland, before he became an international swimming star.
Phelps has discussed how ADHD affected his concentration and behavior as a child. Swimming provided structure and a productive outlet for his energy, while coach Bob Bowman later helped him channel that focus through demanding, highly organized training. Phelps began working with Bowman at age 11.
ADHD did not prevent Phelps from succeeding academically or athletically, and it should not be confused with dyslexia, asthma or diabetes. His story is often cited in discussions about how sport, routine and supportive coaching can help children manage challenges associated with attention and impulse control.