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Autism is associated with several genetic disorders, [4] perhaps due to an overlap in genetic causes. [5] About 10–15% of autism cases have an identifiable Mendelian (single-gene) condition, chromosome abnormality, or other genetic syndrome, [6] a category referred to as syndromic autism.
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 ...
Autism, also called autism spectrum disorder (ASD) or autism spectrum condition (ASC), is a neurodevelopmental disorder characterized by symptoms of deficient reciprocal social communication and the presence of restricted, repetitive, and inflexible patterns of behavior. While its severity and specific manifestations vary widely across the ...
Kuhfahl's 9-year-old son, Daniel, has autism spectrum disorder, is minimally verbal and has sensory processing issues. "He is more sensitive to sounds than typical people," she explains.
A 2003 review of epidemiological studies of children found autism rates ranging from 0.03 to 4.84 per 1,000, with the ratio of autism to Asperger syndrome ranging from 1.5:1 to 16:1; [142] combining the geometric mean ratio of 5:1 with a conservative prevalence estimate for autism of 1.3 per 1,000 suggests indirectly that the prevalence of AS ...
Rosea Poynter, of Nottingham, says her son waited years for an autism and ADHD diagnosis. Call for autism 'screening' for premature children Skip to main content
Sleep problems in autism have been linked in a study to brain changes, particularly in the hippocampus, though this study does not prove causation. [66] A common presentation of sleep apnea in children with autism is insomnia. [67] All known genetic syndromes which are linked to autism have a high prevalence of sleep apnea.
Duplications of 15q11-13 are associated with about 5% of patients with ASD [25] and about 1% of patients diagnosed with classical Autism. [ 26 ] 15q11-13 in humans contains a cluster of genetically imprinted genes important for normal neurodevelopment .