Autism
Autism symptom checklist for adults: what to take to your GP
A practical autism checklist for adults. Tick what you recognise, print the result, and take it to your GP appointment.
Around 750,000 autistic adults in England are estimated to be undiagnosed. Many reached adulthood without an explanation for experiences that were real and persistent — the exhaustion after social events, the distress at unexpected change, the sense of always having been different without being able to say why.
If you're reading this and wondering whether autism might explain your experience, this checklist is a starting point. Tick what you recognise. Print it. Take it to your GP.
Autism symptom checklist for adults
Tick what you recognise. Nothing is saved or sent anywhere. Print or save the result to take to your GP.
A few things resonate
You've recognised some of these, but not many. If what you're noticing feels manageable, you may just want to keep watching. If it's getting in the way of work, relationships, or day-to-day life, a GP conversation is worth having.
Why autism is missed in adults
Many adults reach this checklist after years of being told their difficulties were something else: anxiety, depression, 'just being sensitive', or personality. Autism in adults often goes unrecognised for several specific reasons.
- Masking: Most autistic adults — especially women — have spent decades developing strategies to appear neurotypical. Verbal fluency, social scripts, and careful observation of others mean autism can be invisible in clinical settings, even when it's costing enormous effort.
- Diagnostic criteria were designed for children: Standard autism assessment tools were developed largely from studies of autistic boys and children. The presentations more common in adults — and in women — weren't well captured.
- Previous diagnoses of anxiety or depression: These are real — autistic adults have significantly higher rates of both — but they're often consequences of living without an autism diagnosis, not separate conditions.
- Co-occurring ADHD: 30–50% of autistic people also have ADHD. If you've had an ADHD assessment, it's worth asking whether autism was also considered — the two are frequently assessed for one without the other.
A GP who isn't familiar with adult autism presentations may need some guidance. You can ask specifically: 'I'd like a referral for an adult autism assessment. I'm aware NHS waiting times are long and I'd like to use NHS Right to Choose if possible.'
Read the full guide
Autism in adults is frequently missed — especially in women. This guide covers the signs, why it gets missed, what a diagnosis changes, and how to access assessment in the UK.
Read: Autism in adultsNot a diagnostic tool.
What to do if you recognised a lot of this
A high score on this checklist doesn't diagnose autism — it's a signal worth following up. The most useful next step is a conversation with your GP.
What to say:
"I'd like a referral for an adult autism assessment. I'm experiencing [specific things from your list] and I believe autism may be relevant. I understand NHS waits are long and I'd like to use NHS Right to Choose if possible."
Some GPs are unfamiliar with adult autism assessment pathways. If you're met with scepticism, you can add: "Autism is a lifelong condition and late diagnosis is common, particularly in adults who have masked. I'd like this referral documented."
If your GP isn't helpful, you can self-refer for a private assessment — though this costs £1,200–2,000. See the autism assessment guide for a full breakdown of all routes.
Why autism in adults gets missed
Autism wasn't diagnosed in adults — or in women — until relatively recently. Diagnostic criteria were developed from studies of autistic boys and children, so the presentations more common in adults, and in people who've spent decades masking, weren't well captured by assessment tools. Many autistic adults were instead diagnosed with anxiety, depression, or told their difficulties were personality traits rather than neurological ones.
Many parents discover their own autism when a child is assessed. If that's what brought you here, that recognition is valid and extremely common.
This article is part of the Neuroequipped Autism guide. For the full guide to adult autism signs, see Autism in adults: signs you might have missed. For the assessment process, see Autism assessment: NHS and private options. For PIP and financial support, see Autism and PIP.
Neuroequipped provides research-grounded information for parents and educators. It is not medical advice. If you have concerns about your own presentation, speak to your GP.