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from birth. Pervasive developmental disorder not otherwise specified (PDD-NOS) [1] is a historic psychiatric diagnosis first defined in 1980 that has since been incorporated into autism spectrum disorder in the DSM-5 (2013). According to the earlier DSM-IV, PDD-NOS referred to "mild or severe pervasive deficits in the development of reciprocal ...
Developmental disability. Developmental disability is a diverse group of chronic conditions, comprising mental or physical impairments that arise before adulthood. Developmental disabilities cause individuals living with them many difficulties in certain areas of life, especially in "language, mobility, learning, self-help, and independent ...
Autism or autism spectrum disorder[a] (ASD), is a neurodevelopmental disorder characterized by repetitive, restricted, and inflexible patterns of behavior, interests and activities and persistent deficits in social communication and interaction. Autism generally affects a person's ability to understand and connect with others, as well as their ...
Psychiatry, psychology. Emotional and behavioral disorders (EBD; also known as behavioral and emotional disorders) [1][2] refer to a disability classification used in educational settings that allows educational institutions to provide special education and related services to students who have displayed poor social and/or academic progress.
Classic autism, also known as childhood autism, autistic disorder, (early) infantile autism, infantile psychosis, Kanner's autism, Kanner's syndrome, or (formerly) just autism, is a neurodevelopmental condition first described by Leo Kanner in 1943. It is characterized by atypical and impaired development in social interaction and communication ...
High-functioning autism (HFA) was historically an autism classification to describe a person who exhibited no intellectual disability but otherwise showed autistic traits, such as difficulty in social interaction and communication, as well as repetitive, restricted patterns of behavior. The term is often applied to autistic people who are ...
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.
Psychiatry. Mental disorders diagnosed in childhood can be neurodevelopmental, emotional, or behavioral disorders. These disorders negatively impact the mental and social wellbeing of a child, and children with these disorders require support from their families and schools. Childhood mental disorders often persist into adulthood.