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What does an ADHD assessment actually involve?

What to expect before, during, and after a formal ADHD evaluation — and how to prepare.

For many people, the idea of a formal ADHD assessment is both appealing and intimidating. Here's a practical overview of what to expect.

Who carries out an ADHD assessment?

In the UK, ADHD can be formally diagnosed by a psychiatrist or clinical psychologist. You can access this via the NHS (through a GP referral) or privately (expect to pay £500–£1,500).

The Right to Choose pathway allows UK patients to choose an alternative provider to their local NHS service — this can significantly reduce waiting times.

What happens during the assessment?

A comprehensive ADHD assessment typically includes a detailed clinical interview, exploration of your developmental history, standardised rating scales, and sometimes collateral information from a partner or family member.

The most useful thing you can bring to an assessment is specific examples — not just 'I'm disorganised', but the actual incidents that have cost you jobs, relationships, or years of self-blame.

What happens if you're diagnosed?

A positive diagnosis opens access to medication, psychological interventions, and formal workplace or educational accommodations. Many people describe the post-diagnosis period as a mixture of relief and grief — both are entirely valid.

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