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The same association occurs in childhood onset schizophrenia, which is considered a more homogenous form of the disorder that hews closest to the hypothetical neurodevelopmental disorder underlying schizophrenia-spectrum conditions; approximately one-quarter of children with schizophrenia fit the criteria for an autism spectrum disorder prior ...
Another study in 2009 by Simon Fraser University researchers identifies a link between autism and schizophrenia: "The SFU group found that variations in four sets of genes are related to both autism and schizophrenia. People normally have two copies of each gene, but in those people with autism some genome locations have only single copies, and ...
Unusual responses to sensory stimuli are more common and prominent in individuals with autism, and sensory abnormalities are commonly recognized as diagnostic criteria in autism spectrum disorder (ASD), as reported in the DSM-5; although there is no good evidence that sensory symptoms differentiate autism from other developmental disorders. [84]
Co-occurring clusters of symptoms must also not be better explained by being symptoms of another disorder such as experiencing mood swings due to autism, cognitive difficulties due to schizophrenia, and so on. The exact diagnostic criteria for MCDD remain unclear but may be a useful diagnosis for people who do not fall into any specific category.
A spectrum disorder is a disorder that includes a range of linked conditions, sometimes also extending to include singular symptoms and traits.The different elements of a spectrum either have a similar appearance or are thought to be caused by the same underlying mechanism.
Some studies have suggested that autism is a disorder of the association cortex. [38] Event-related potentials with respect to attention, orientation to auditory and visual stimuli, novelty detection, language and face processing, and information storage are altered in autistic individuals; several studies have found a preference for nonsocial ...
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 ...
Opiate theory hypothesizes that autism is the result of a metabolic disorder in which opioid peptides gliadorphin (aka gluteomorphin) and Casomorphin, produced through metabolism of gluten (present in wheat and related cereals) and casein (present in dairy products), pass through an abnormally permeable intestinal wall and then proceed to exert ...