This mental disorder is diagnosed in individuals who, from whatever cause, have a below-normal intelligence function, beginning before adulthood, and whose adaptive functioning is impaired in any of a variety of areas. Emotional and behavioral disorders are a frequent complication of mental retardation, and they may interfere with the child's progress.
Most retarded children recognize that they are behind others of their own age.
Retarded adolescents and young adults may become depressed. These persons might not have enough language skills to talk about their feelings, and their depression may be shown by new problems, for instance in their behavior, eating and sleeping. It is very important that the child has a comprehensive evaluation to find out about his or her difficulties as well as strengths. Since no specialist has all the necessary skills, many professionals might be involved. A child psychiatrist can refer the child for the necessary tests and consultations, put together the results, and jointly with the family and the school, develop a comprehensive treatment and education plan.