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Disability – may be physical, cognitive, mental, sensory, emotional, developmental or some combination of these. Developmental disability – a term used in the United States and Canada to describe lifelong disabilities attributable to mental or physical impairments, manifested prior to age 18. Disorder –
Autism spectrum disorder [a] (ASD), or simply autism, is a neurodevelopmental disorder "characterized by persistent deficits in social communication and social interaction across multiple contexts" and "restricted, repetitive patterns of behavior, interests, or activities". [11] Sensory abnormalities are also included in the diagnostic manuals ...
The autism spectrum may comprise a small set of disorders that converge on a few common molecular pathways, or it may be a large set of disorders with diverse mechanisms. [16] Autism appears to result from developmental factors that affect many or all functional brain systems. [17]
This is a list of major and frequently observed neurological disorders (e.g., Alzheimer's disease), symptoms (e.g., back pain), signs (e.g., aphasia) and syndromes (e ...
The scientific study of the causes of developmental disorders involves many theories. Some of the major differences between these theories involves whether environment disrupts normal development, if abnormalities are pre-determined, or if they are products of human evolutionary history which become disorders in modern environments (see evolutionary psychiatry). [5]
Classic autism, also known as childhood autism, autistic disorder, or Kanner's syndrome, is a formerly diagnosed neurodevelopmental disorder first described by Leo Kanner in 1943. It is characterized by atypical and impaired development in social interaction and communication as well as restricted, repetitive behaviors, activities, and interests.
There are two possible developmental courses of autism. One course of development is more gradual in nature, with symptoms appearing fairly early in life and persisting. [9] A second course of development is characterized by normal or near-normal development before onset of regression or loss of skills, which is known as regressive autism. [10]
The development of autism is associated with several prenatal risk factors, including advanced age in either parent, diabetes, bleeding, and maternal use of antibiotics and psychiatric drugs during pregnancy. [1] [51] [52] Autism has been linked to birth defect agents acting during the first eight weeks from conception, though these cases are ...