Attention Deficit Hyperactivity Disorder, or ADHD, is a behavioral disorder that mostly develops in the people when they are children , and sometimes can continue into when they become adults. People with ADHD tend to have difficulty concentrating and in keeping their attention focused on just one thing, while also becoming easily annoyed with any activity that they are engaged in. The exact causes of ADHD remain unknown, except for all the fact that ADHD often runs in families, but there are now attention deficit hyperactivity disorder pills that you can order online that can also help you in treating this condition. There are three basic forms of ADHD can be classified as inattentive, impulsive, or hyperactive. and you can also buy Adderall online as it is the best medication for this disorder.