How to Get an Adult ADHD Diagnosis: A Practical Guide
8 min read
The path to an ADHD diagnosis as an adult can feel daunting — particularly if you have spent years being told you just need to try harder. This practical guide walks you through every step, from your first appointment to receiving a formal evaluation.
Step 1: Take a validated screening
Before seeing a doctor, take a validated screening tool like the ASRS-v1.1 available free on this site. Your results provide a starting point for the clinical conversation and demonstrate that you have done your homework. Print or save your results to bring to your appointment.
Step 2: See your GP or family doctor
Your first appointment is with your primary care physician. Describe your symptoms in functional terms — how they affect your work, relationships, and daily life — rather than self-diagnosing. Ask for a referral to a psychiatrist, clinical psychologist, or specialist ADHD service. Bring your screening results and if possible school reports or other childhood documentation.
Step 3: The specialist evaluation
A formal ADHD evaluation typically includes: a structured clinical interview covering symptom history, childhood behaviour, and current functional impairment; standardised rating scales; review of collateral information; and ruling out other conditions. It usually takes 1–3 appointments. There is no blood test or brain scan for ADHD — it is a clinical diagnosis.
What to bring to your appointment
Old school reports; a list of specific examples of how symptoms affect your daily life; your ASRS-v1.1 results from this screening; any previous mental health diagnoses or treatment history; a brief timeline of when difficulties first appeared.