F&Q

We have gathered answers to some of the most common questions about ADHD and autism assessments. 

  • An assessment is a structured process used to understand whether someone meets the criteria for ADHD or autism. It usually includes a clinical interview, developmental history, questionnaires, and observation or validated tools. There is no single medical test – diagnosis is based on a comprehensive evaluation.

  • Assessments can be carried out for children, young people and adults. ADHD and autism present differently across ages, so the assessment is adapted accordingly.

  • The process often includes:

    • A clinical interview about symptoms and daily life.

    • Developmental history, sometimes with input from parents, carers or teachers.

    • Questionnaires and rating scales completed by the individual and people who know them well.

    • Observation or structured tools to support clinical decision-making.

  • It varies. Some assessments can be completed in a few appointments, while others require more time depending on complexity, co-existing conditions, and the availability of background information.

  • In the UK, ADHD and autism assessments are guided by the NICE recommendations (NG87 for ADHD, CG142 & CG128 for autism). These ensure high-quality and standardised practice.

  • You will usually receive a written report summarising the findings, confirming whether the diagnostic criteria are met, and providing recommendations for support, treatment or adjustments at school, work or in daily life.

    • ADHD: NICE recommends that medication may be offered, especially for moderate to severe symptoms, and always as part of a wider treatment plan.

    • Autism: There is no medication for autism itself, but support, therapy and adjustments are available. Sometimes co-occurring conditions (such as anxiety or ADHD) may be treated with medication.