Attention Deficit Hyperactivity Disorder Attention Deficit Hyperactivity Disorder (ADHD) is very commonly known. ADHD is one of the most common mental disorders among children today. The NIMH (National Institute of Mental Health) predicts that it will affect 3 to 5% of all children (AACAP), with approximately 30% to 65% of these children experiencing persistence of symptoms into adolescence and childhood. adulthood (AACAP). There are three types of attention deficit hyperactivity disorder; Predominantly hyperactive-impulsive type, predominantly inattentive type, and combined type (ehow.com). ADHD symptoms can be classified into three main categories; hyperactivity, inattention and impulsivity. These behaviors can interfere with ADHD sufferers' ability to deliberately focus on organizing and completing a specific task that they may not enjoy. A case of this type of behavior is recognized in a report prepared by the National Institute of Mental Health in which one of the subjects studied failed to pass school exams due to his inattentive behavior (clinicaltrials.gov). These types of behaviors can harm your mental health. the person's relationships with others as well as disrupting their daily life, draining energy and decreasing self-esteem, depending on the severity of their symptoms (adhd.com). This article shows the many factors of how ADHD affects and is managed by those who suffer from this disorder. First of all, the most important part to understand about this disorder are the symptoms that sufferers present. One of the most common symptoms of this disorder is inattention. Inattention occurs when a person is distracted and does not concentrate on paying attention to a matter placed in front of...... in the center of the paper ......=&state2=&cntry2=&state3=&cntry3=&locn=&gndr = &fund=0&rcv_s=&rcv_e=&lup_s=&lup_e=>."How common is ADHD." AACAP. AACAP and Web. January 5, 2014. "Neurodevelopmental Disorders." Family success. Family Success and the Web. January 5, 2014. "What is the Definition of ADHD." Adult - Child - ADD - ADHD. N/A and Web. 5 January 2014. .Dr.Khin (2013 January 2014) community hospital. Personal interviews/appointments for my ADHD"Attention Deficit/Hyperactivity Disorder (ADHD)." Centers for Disease Control and Prevention-CDC. CDC and Web. 5 January 2014.ncbddd/adhd/treatment.html>.