ADHD stands for Attention deficit hyperactivity disorder. It is a kind of mental disorder in which an individual may have a problem in focusing their attention on a single thing and also some people face difficulty in regulating their emotions or problems. ADHD can happen to both children and adults but it is most common in children between the age group of 6 to 12. This disorder may occur due to genetic problems or due to environmental factors. ADHD is more common in boys rather than in girls. In boys problem of ADHD is three times more than in girls. Some children may take this disorder to their adulthood too and some people get to know about this disorder in their adulthood.