Attention deficit hyperactivity disorder (ADHD) is a Neurodevelopmental Disorder, one of the most common childhood brain disorders and can continue through adolescence and adulthood. Symptoms include difficulty staying focused and paying attention, difficulty controlling behavior, and hyperactivity (over-activity). These symptoms can make it difficult for a child with ADHD to succeed in school, get along with other children or adults, or finish tasks at home.

Brain imaging studies have revealed that, in youth with ADHD, the brain matures in a abnormal pattern and is delayed, on average, by about 3 years. The delay is most pronounced in brain regions involved in thinking, paying attention, and planning. Studies have found that the outermost layer of the brain, the cortex, shows delayed maturation overall, and the Corpus Callosum, important for proper communications between the two halves of the brain shows an abnormal growth pattern