Adult autism is diagnosed by qualified, multidisciplinary professionals who specialize in neurodevelopmental conditions. These typically include:

  • Neuropsychologists or psychologists: These specialists conduct comprehensive evaluations and use tools like the Autism-Spectrum Quotient for self-assessment and the ADOS-2 (Module 4) to observe social interaction traits.
  • Developmental specialists: While often associated with children, specialists experienced in adult presentations can help identify long-standing developmental history.
  • Multi-disciplinary teams: These groups may include psychiatrists or neurologists who help rule out or identify co-occurring conditions like ADHD or anxiety, which can overlap with or mask autism traits.

The diagnostic process for adults often involves a combination of clinical interviews, standardized assessments, and a review of developmental history (retrospective self-reporting). Because adults may have spent years masking their traits to fit into social environments, clinicians look for persistent challenges in social communication and restricted or repetitive patterns of behavior as defined by the DSM-5 or ICD-11 criteria.


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