ADHD (Attention Deficit Hyperactivity Disorder) Symptoms, Causes, Treatment and Medications

What is attention deficit hyperactivity disorder (ADHD)? ADHD refers to a chronic biobehavioral disorder that initially manifests in childhood and is characterized by hyperactivity, impulsivity, and/or inattention. Not all of those affected by ADHD manifest all three behavioral categories. These symptoms can lead to difficulty in academic, emotional, and social functioning. The diagnosis is