Autism is associated with a combination of genetic and environmental factors. Risk factors during pregnancy include certain infections, such as rubella, and toxins including valproic acid, alcohol, cocaine, pesticides and air pollution. Controversies surround other proposed environmental causes; for example, the vaccine hypotheses, which have been disproven. Love someone with autism shirt Autism affects information processing in the brain by altering how nerve cells and their synapses connect and organize; how this occurs is not well understood. In the DSM-5, autism and less severe forms of the condition, including Asperger syndrome and pervasive developmental disorder not otherwise specified (PDD-NOS), have been combined into the diagnosis of autism spectrum disorder (ASD).
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Autism is a developmental disorder characterized by difficulties with social interaction and communication, and by restricted and repetitive behavior. Parents usually notice signs during the first two or three years of their child's life. These signs often develop gradually, though some children with autism reach their developmental milestones at a normal pace before worsening.
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