Intellectual disability is a condition that limits intelligence and disrupts abilities necessary for living independently. Signs of this lifelong condition appear during childhood. Most people with this will need some degree of assistance throughout their lives. Support programs and educational offerings can help with managing symptoms and effects. Advertisement Contents Overview Symptoms and Causes Diagnosis and Tests Management and Treatment Outlook / Prognosis Prevention Living With ... An intellectual disability , also known as an intellectual developmental disorder or mental retardation, is a neurodevelopmental condition characterized by limitations in cognitive functioning and adaptive behavior Intellectual disability (ID), also known as general learning disability (in the United Kingdom), [3] and formerly mental retardation (in the United States), [4][5][6] is a generalized neurodevelopmental disorder characterized by significant impairment in intellectual and adaptive functioning that is first apparent during childhood. Intellectual disability (or ID) is a term used when a person has certain limitations in cognitive functioning and skills, including conceptual, social and practical skills, such as language, social and self-care skills. These limitations can cause a person to develop and learn more slowly or differently than a typically developing person. Intellectual disability can happen any time before a person turns 22 years old, even before birth. Intellectual disability is the most common developmental ...