The ADHD is a developmental disorder. The abbreviation of ADHD is attention deficit hyperactivity disorder. These kinds of problems are primarily characterized by hyperactivity as well as the co-existence of attentional problems. Commonly, the disorder of ADHD is affecting about 3 to 5 percent of school aged children. Today, there are 4.7 percent of American adults live with ADHD diseases. It is usually involved in number of combinations such as lifestyle changes, counseling, combination of medications and behavior modifications. Literally, the ADHD is classified into three various subtypes such as predominantly inattentive, combined hyperactive-impulsive and predominantly hyperactive. It is a common behavioral disorder. There are some possible causes factors also include such as premature delivery, brain injury, low birth weight, environmental exposures and tobacco or alcohol use during pregnancy. The treatment of ADHD cases are treated with a combination of behavior therapy and medication therapy. It is more useful for individuals.