One of the most common mental disorders among children is Attention Deficit Hyperactivity Disorder. This disease does not only affect children, but is more likely too, than it would for an adult. However, ADHD also can carry into adulthood from childhood. The name Attention Deficit Hyperactivity Disorder is pretty much self explanatory as to what the disorder consists of, although many people don't know exactly how it affects one. "In children, the three major symptoms are hyperactivity, impulsiveness, and inattentiveness" (Harvard Mental Health Letter). It is hard for them to pay attention, follow directions, and sit still, along with many other problems. It can be tricky to diagnose, since there are many children that may seem to act this way even though they don't have ADHD. There are many other misleading causes towards this disorder.
Having ADHD also includes having a hard time concentrating on one thing, and becoming easily bored. They are constantly moving around, fidgeting, and find it very difficult to sit still or focus on one thing. It is hard for them to think clearly, and many times they won't think about things before they do them. Most children are this way, and like to be entertained, however there is a difference with children that have ADHD. Most children are this way, and like to be entertained, however there is a difference with children that have ADHD. "To assess whether a person has ADHD, specialists consider several critical questions: Are these behaviors excessive, long-term, and pervasive? Are they a continuous problem, not just a response to a temporary situation" (NIMH)? It takes a specialist, such as a Psychiatrist, Psychologist or a Pediatrician for example to be able to diagnose a child with ADHD.
A child that has Attention Deficit Hyperactive Disorder may find school more difficult than other children as well. Along with the child having trouble in class, the teacher does also.