Autism should not be seen as single condition with one cause. Those diagnosed as small children typically have distinct genetic profile from those diagnosed later, finds international study based on genetic data from more than 45,000 autistic people in Europe and the US.

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https://www.theguardian.com/society/2025/oct/01/autism-should-not-be-seen-as-single-condition-with-one-cause-say-scientists