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Autism was found to occur more often in families of physicists, engineers and scientists. 12.5% of the fathers and 21.2% of the grandfathers (both paternal and maternal) of children with autism were engineers, compared to 5% of the fathers and 2.5% of the grandfathers of children with other syndromes. [47] Other studies have yielded similar ...
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 ...
Altered habituation processes have been linked to characteristic traits of ASD, such as under-responsiveness to some stimuli and over-responsiveness to others. [22] There are many genetic and epigenetic factors that can contribute to increased excitability, but one of the mechanisms implicated in ASD is alterations in GABAergic systems in the ...
Wholly genetic disorders, such as Huntingtons, are inherited from parents' genes and are present before birth but the symptoms that develop after birth are delayed manifestations of the inherited trait. Disorders that are partially genetic, such as ALS and allergies, mean the organism has inherited a predisposition to develop a certain ...
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. The prevalence of sleep apnea in Down's Syndrome is 50% - 100%. [68] Sleep problems and OSA in this population have been linked to language development. [69]
The basic principle behind psychiatric genetics is that genetic polymorphisms (as indicated by linkage to e.g. a single nucleotide polymorphism) are part of the causation of psychiatric disorders. [1] Psychiatric genetics is a somewhat new name for the old question, "Are behavioral and psychological conditions and deviations inherited?".
Distinguishing between ASD and other diagnoses can be challenging because the traits of ASD often overlap with symptoms of other disorders, and the characteristics of ASD make traditional diagnostic procedures difficult. [2] [3] Autism is associated with several genetic disorders, [4] perhaps due to an overlap in genetic causes. [5]
Signs of autism are highly variable, and different individuals will have a different mix of traits. Some more common traits include: Avoidance of eye contact – preference to avoid eye contact and feelings of fear or being overwhelmed when looking into someone's eyes; Developmental delay – slower acquisition of life skills