ADHD & autism

Combined ADHD and autism assessment: what to know

193 of the 267+ clinics we independently verify offer a combined pathway — here's what it involves and when it's worth considering.

Find a combined-assessment clinic →
193 clinics offer combined assessment
Same clinical rigour as single-condition

ADHD and autism frequently overlap

ADHD and autism are separate conditions, but they share enough overlapping traits — difficulty with attention and executive function, sensory sensitivity, social communication differences — that clinicians frequently see both together. A single-condition assessment can sometimes miss the other, particularly when one set of traits is more visible than the other, or when masking (consciously or unconsciously compensating for traits) makes autism harder to spot in someone who is more obviously struggling with attention.

If you recognise traits of both conditions in yourself — not just ADHD, or not just autism — a combined assessment is generally worth considering over a single-condition one, since it's designed to weigh both possibilities together rather than assessing for one and ruling the other out as an afterthought.

Clinics offering combined ADHD + autism assessment

CARE ADHD
London
£595–£750
Clinical Partners Manchester
Manchester
£1200–£1800
Clinical Partners Birmingham
Birmingham
£1200–£1800
Clinical Partners Leeds
Leeds
£1200–£1800
Clinical Partners Bristol
Bristol
£1200–£1800
Clinical Partners Brighton
Brighton
£1200–£1800
CADS Autism & ADHD Assessment and Diagnostic Services
Clipston
Contact clinic
Clinical Partners Liverpool
Liverpool
£1200–£1800

See the full list, plus every other clinic we verify, in the directory.

Before you book a combined assessment

Why get assessed for both ADHD and autism?

ADHD and autism share several overlapping traits — difficulties with attention, sensory sensitivity, and executive function — which means one can mask or be mistaken for the other. If you recognise traits of both in yourself, a combined assessment considers them together rather than risking a partial picture from a single-condition assessment.

Is a combined assessment more expensive?

Usually, yes — a joint ADHD and autism assessment typically costs more than either assessment on its own, since it involves additional standardised tools and a longer clinical interview. It's often cheaper than paying for two entirely separate assessments at two different clinics, though.

What's actually involved in a combined assessment?

The same core elements as a single-condition assessment — clinical interview, developmental history, standardised questionnaires — but covering diagnostic criteria for both conditions, usually with autism-specific tools added (such as the ADOS-2 or similar) alongside the ADHD-specific ones.

Do all clinics offer combined assessments?

No — it varies considerably by clinic, and it's one of the more useful things to check early if it's relevant to you, since booking a single-condition assessment first and then needing a second one later costs more overall than getting it right the first time.

Can the same clinician diagnose both conditions?

Often yes, if the clinic has clinicians trained and accredited in both ADHD and autism diagnostic frameworks — but not every clinic does, so it's worth confirming rather than assuming a "combined assessment" listing means the same person handles both.

Not sure which assessment fits?

Answer a few questions and we'll match you to the right clinic.

Start free assessment →