More and more adults are discovering they are neurodivergent in their 30s, 40s, 50s and beyond. Often it starts with a child’s assessment, a social media post that feels uncomfortably familiar, or a period of burnout at work. Then comes the “aha” moment: a new way of understanding a lifetime of experiences. Below we cover why so many people are identified later, how to get assessed as an adult in the UK, the upsides and the hard parts of a later diagnosis, and what it means at work.
Why so many people are diagnosed later in life
Many of today’s adults grew up when ADHD, autism, dyslexia and other forms of neurodivergence were far less understood, and when assessment criteria were built mostly around how young boys presented. The NHS notes that ADHD is thought to be recognised less often in women than men, partly because inattentive traits can be harder to spot than hyperactive ones.
Many neurodivergent people also learn to mask, consciously or not, by copying others, rehearsing conversations and working twice as hard to keep up. Masking can carry someone through school and into a career, but it is exhausting. It is often a change in demands, such as a promotion, a new manager, parenthood or menopause, that brings things to the surface. You can read about one well-known example in our article on Bella Ramsey’s autism diagnosis, and about how traits can overlap in our guide to AuDHD in women.
Benefits of an adult neurodiversity diagnosis
A diagnosis does not change who someone is. What it can change is how they understand themselves and what support they can access.
1. Self-understanding and validation
For many people, the biggest benefit is finally having an explanation. Experiences that were once put down to being lazy, disorganised, too sensitive or “difficult” can be reframed as differences in how their brain works. That shift from self-blame to self-understanding can be a huge relief, and it often brings a clearer sense of strengths as well as challenges.
2. Access to support and reasonable adjustments
A diagnosis can make it easier to ask for what you need at work. In the UK, the legal test for disability under the Equality Act 2010 is about the effect of an impairment on day-to-day life, not the label itself, so employers should not wait for a diagnosis before acting. In practice, though, a report from an assessment often gives a clear starting point for conversations about reasonable adjustments. Our article on ADHD, autism and the legal definition of disability explains this in more detail.
Government-funded support is also available. Access to Work can pay for things like a job coach, support worker, equipment or mental health support for people whose condition affects their ability to work. It is a grant that does not have to be paid back, and eligibility is based on your support needs at work rather than a specific diagnosis.
3. Community connection
Many people describe finding other neurodivergent adults as one of the best parts of a later diagnosis. Online groups, employee resource groups and local peer communities offer a place to share experience, swap practical tips and feel understood without having to explain.
4. Improved healthcare outcomes
Knowing you are neurodivergent can help health professionals give better-informed care. For ADHD, a diagnosis also opens the door to discussing treatment options, including medication, with a specialist. It can also help people make sense of anxiety, exhaustion or burnout that may have been treated in isolation before.
How to get a diagnosis as a neurodivergent adult
There are several routes to an assessment as an adult in the UK.
Through your GP. The usual starting point on the NHS is a GP appointment. For autism, a GP can often refer adults to a local autism team. For ADHD, the GP may refer you to a specialist, such as a psychiatrist. It helps to write down examples of how your traits affect your work, relationships and daily life, including from childhood, before the appointment.
Right to Choose (England only). If you are registered with a GP in England, you can choose which NHS-funded service carries out your assessment, including some private providers that hold NHS contracts. This is known as Right to Choose. It needs a GP referral, as self-referrals are not accepted, and it covers initial assessments. Demand is very high, and some local NHS areas have started managing activity with providers, which can mean pauses on new appointments, so check current availability with your GP and the provider.
Privately. Some people pay for a private assessment to avoid long waits. If you go down this route, check the clinician’s qualifications and ask how the report can be used for ongoing care and support.
Dyslexia and other specific learning differences. A GP cannot diagnose dyslexia. Assessments are usually carried out by an educational psychologist or specialist assessor, and most people pay for one, though some employers fund them.
Challenges of an adult neurodiversity diagnosis
Waiting is often the hardest part. NHS waits for adult ADHD and autism assessments can run to months or even years, and that uncertainty can be stressful.
A diagnosis can also bring mixed emotions. Relief often sits alongside grief for the support that was missing earlier in life, or frustration at years spent struggling without an explanation. Some people go through a period of “unmasking” as they work out which habits were genuinely theirs and which were survival strategies. That takes time, and that is normal.
The professional dilemma: diagnosis, disclosure and your career
One of the biggest questions after a diagnosis is whether to tell your employer. There is no legal requirement to disclose, and the right answer depends on your role, your organisation and how safe you feel. Sharing can unlock adjustments and understanding, but many people still worry about stigma or being seen differently. Our disclosure templates can help you plan what to say and how much to share.
For people working internationally, the picture is more complicated. Legal protections, attitudes and support differ a great deal between countries, so it is worth understanding the local context before making decisions.
For employers, the lesson is simple. As we explore in our article on why many of your employees may be neurodivergent without knowing it yet, building a workplace that works for different minds from the start, rather than waiting for a diagnosis or a disclosure, is better for everyone and good for business. Our guides to ADHD in the workplace and autism in the workplace are a good place to start.
Moving forward
For a lot of people, a later diagnosis is where they start working with their brain instead of against it. They get clearer on their strengths, get better at asking for what they need, and slowly drop years of self-criticism. Put them in the right environment and neurodivergent people do well at every stage of a career, the later ones included.
How Enna can help
Some of your employees will be newly diagnosed, some will be on a waiting list, and some won’t know yet. We help organisations support all of them. Our workplace needs assessments identify practical adjustments with or without a diagnosis, our workplace coaching supports individuals as they adapt, and our training on supporting and managing neurodivergent employees gives managers the confidence to have supportive conversations. Book a call with our team to talk about what would work for your organisation.
If you’re newly diagnosed and thinking about a change of job, the Enna jobs board lists roles with employers committed to neuroinclusion. Sign up for job alerts to hear about new opportunities first.
