Obsessive-Compulsive Disorder (OCD) is characterized by the presence of obsessions, compulsions, or both.

Attention-Deficit/Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder characterized by a persistent pattern of inattention and/or hyperactivity-impulsivity that interferes with functioning or development. The symptoms of ADHD are divided into two main categories: inattention and hyperactivity-impulsivity.