ADHD, which stands for Attention-Deficit/Hyperactivity Disorder, is a neurodevelopmental condition characterized by persistent patterns of inattention and/or hyperactivity-impulsivity that interfere with functioning or development. Inattention involves difficulties with sustaining focus, following through on instructions, organizing tasks, and being easily distracted. Hyperactivity-impulsivity manifests as excessive fidgeting, restlessness, difficulty staying seated, talking excessively, interrupting others, and acting without thinking through consequences. These symptoms must be present to a degree that is maladaptive and inconsistent with developmental level, with several symptoms needing to be present before age twelve and occurring in multiple settings, such as at home and at school or work, to warrant a diagnosis.