What actually happens in an ADHD assessment
Not a quiz, and not a formality. A step-by-step account of the appointment, and what makes the difference to its accuracy.
People arrive at assessments expecting a test with a pass mark. It is closer to a long, structured conversation in which a specialist is continually weighing one explanation against several others.
Before the appointment
You complete validated screening questionnaires. These do not decide anything — they focus the appointment, so that your time with the consultant is spent on the parts that need clinical judgement rather than on box-ticking.
Where possible you are also asked for input from someone who knew you as a child. A parent, an older sibling, or old school reports. If none of that is available, say so; many adults are assessed without a childhood informant, and a good clinician will tell you honestly how that affects confidence in the conclusion.
During the appointment
- Current difficulties across every domain — work, study, home, relationships, money, sleep
- Developmental history, because ADHD is by definition present from childhood
- Physical health, medication and family history
- Systematic consideration of what else could account for the picture
That last point is the part that separates a real assessment from a checklist. Anxiety, depression, trauma, autism, sleep disorders and thyroid dysfunction all produce overlapping symptoms, and several commonly co-occur with ADHD rather than replacing it.
Afterwards
You should receive a clear diagnostic opinion, the reasoning behind it, and a written report. The report matters more than people realise: it is what a GP needs in order to consider shared care, and what an employer or university needs in order to put adjustments in place.
If a service offers a diagnosis without a developmental history, or without addressing what else it might be, that is worth questioning before you book.
This article is general information, not medical advice about your particular situation. If something here sounds familiar, a consultant psychiatrist can tell you whether an assessment is warranted.
