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Sep 20, 2023 · Autism spectrum disorder (ASD) is a neurodevelopmental disorder associated with impaired social behavior and communication, repetitive behaviors, and restricted interests. In addition to genetic factors, environmental factors such as prenatal drug exposure contribute to the development of ASD. However, how those prenatal factors induce ...
Jan 17, 2023 · By school age, brain development has slowed and the brain volume of normally growing children is catching up to the brain volume of children with autism. Studies of connectivity have revealed persistent impairments in the way brain regions are connected throughout childhood, adolescence, and maturation.
Jan 25, 2017 · Regardless, neurotoxicants are autism risk factors for two main reasons: 1 many are known to disrupt neural development and 2 environmental concentrations of several neurotoxicants have increased over the past decades, somewhat tracking with increases in autism prevalence.
Mar 15, 2023 · Psychosocial development: identity development and the autism diagnosis . Many parents of children without learning disabilities described adolescence as a time when they became more aware of their autism diagnosis. There were multiple reasons for this. Some parents had withheld the diagnosis until the child was a teenager.
Aug 9, 2016 · The increased rate of ASD diagnosis has raised questions concerning the genetic and environmental factors contributing to the development of this disorder; meanwhile, the cause of ASD remains unknown. This study surveyed mothers of ASD and non-ASD children to determine possible effects of labor and delivery (L&D) drugs on the development of ASD.
Apr 6, 2006 · Causes and contributing factors for autism are poorly understood. Evidence suggests that prevalence is rising, but the extent to which diagnostic changes and improvements in ascertainment contribute to this increase is unclear. Both genetic and environmental factors are likely to contribute etiologically. Evidence from twin, family, and genetic studies supports a role for an inherited ...
Scientists don't know exactly what causes autism spectrum disorder (ASD). Autism was first described in the 1940s, but very little was known about it until the last few decades. Even today, there is a great deal that we don't know about autism. Because the disorder is so complex and no two people with autism are exactly alike, there are probably many causes for autism. It is also likely that ...
