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What Causes Autism?:
Most parents wonder whether something they did - or didn't do - might have caused their child's autism. While it is possible to nail down the cause of autism in some children, most parents will never find a definitive answer to their question. Though quite a few rare genetic disorders and toxic exposures are known to cause autism (or "autism-like symptoms" that may be misdiagnosed as autism), most cases of autism are considered "idiopathic," meaning "without known cause." Some of the specific known causes of autism are listed at the end of this article.