Adult Autism Diagnosis

This page refers to adult autism diagnosis; if you’re looking for the process behind getting a diagnosis for your child, check here.

Autism is not just for children and while we have many diagnosed adults within the AsIAm Community we do receive requests from many more asking about getting an adult diagnosis. In the last few decades our understanding of autism has advanced far beyond its original definition. 

Dr. Leo Kanner, who first coined the term in 1943, primarily saw it as a childhood psychosis. We now know this to be untrue; in fact the very first child Kanner diagnosed, Donald Triplett, is still alive today! Increasing numbers of adults are now seeking a diagnosis. In fact, adults often pursue a diagnosis after recognizing familiar traits in their own autistic childrenHowever, this manner of thinking persists and many GPs may hesitate to grant a referral to someone over the age of 18. Nevertheless, it is worth persisting to receive a diagnosis.

Why should I get an autism diagnosis as an adult?

Many autistic adults, especially women, can be misdiagnosed with mental health issues such as depression, anxiety or BPD. As a result, the prescribed medications and therapies are usually inaffective, which will lead to further feelings of frustration and poor self-worth. Undiagnosed autistic adults may have spent time in a CAMHS unit due to these misdiagnoses.

In some cases, undiagnosed autistic adults may turn to drugs and/or alcohol as a coping strategy. In fact, some people may only notice their autistic traits after entering a rehabilitation programme.

Therefore, although autism is not a mental illness, poor understanding of autistic traits and uninformed approach to treatment can cause significant distress to an autistic adult’s wellbeing. With this in mind, an adult autism diagnosis often comes as a relief.


How can a diagnosis help me?

Some autistic people choose to self identify and don’t see the need to access an official diagnosis. This is of course valid, and widely accepted within the autistic community (particularly given how difficult it is to access a public assessment). Some other people would like the opportunity to talk it all through with a professional and help get some clarity and understanding around themselves and their life experiences.

Going through the assessment process with the right psychologist can greatly help with this, and can be a therapeutic process. A big benefit to accessing an official diagnosis is it can help provide you hopefully with the right supports and reasonable accommodations either in college, the workplace or in accessing disability benefits. A formal diagnosis is not merely a label. Assessment and diagnosis opens many doors for the following reasons:

aoife dooley autism adult diagnosis

Aoife Dooley (pictured here) was diagnosed at the age of 27.

She commented 

“It’s like you’re constantly looking for an answer you don’t know the question to…When you get a diagnosis as an adult it’s bizarre because everything and nothing changes at the same time. You’re still you, but now you have the tools to understand who you are and how you work.”

How do I find a diagnosis?

Unfortunately, at the moment in Ireland, there are no public assessment teams dedicated to adult diagnoses. Currently, the vast majority of adults who think they might be autistic can only get an assessment privately. 

The typical route for getting diagnosed is to visit your GP and ask for a referral to a psychiatrist or clinical psychologist, preferably one with experience of diagnosing autism.

However, accessing an adult diagnosis through the public health system is virtually impossible so many people will go to a private consultant.

Most private psychologists in Ireland do not require a GP referral to access a psychological assessment for autism. You can self-refer by contacting them directly. It is very important that you undertake an assessment with a professional that is familiar with autism in adults and works in a respectful, neurodiversity affirmative way (i.e. that autism is not seen as a problem to be fixed, but a naturally occurring difference to be understood and celebrated).

It also may be advisable to talk to your GP. There are many private psychiatrists who do require a GP referral. While your GP may only refer you to a private psychologist or psychiatrist, it is important that your GP understands you, and also is able to see the demand for these assessments in Ireland and advocate for them appropriately. You will need to provide your GP with a very specific list of the reason why you think you might be autistic as they may still hold outdated ideas about autism (for example that autistic people can’t make eye contact). 

How does the assessment process work for an adult?

The way the assessment process works for adults can vary across different professionals.Currently in Ireland, an adult autism diagnosis needs to come from a Psychologist or a Psychiatrist. In depth interviews and gathering of information about your life and how you view the world would be similar across who you may see. You will likely meet with the psychologist/psychiatrist (online or in person) for one or more interviews to discuss your experiences. Sometimes adults seeking a diagnosis aren’t showing very obvious ‘signs’ that they are autistic as they have learned to ‘mask’ them over the years.

A good psychologist or psychiatrist with a modern understanding of autism and a neurodiversity affirmative position will be able to still see autism. Meetings with your psychologist would involve talking about your life, your background and why you think you might be autistic. You will discuss information from your past that you think is relevant and try your best to describe how you experience the world. 

Some psychologists will insist that a parent or other family member is involved in your assessment (by meeting the psychologist or providing additional information). But not all psychologists insist on this, and many will put your voice at the centre of the assessment. If you do not wish for a family member to be involved, you can look for a psychologist who does not require this.

The process of getting an assessment as an adult should feel like a collaborative and respectful process between you and your psychologist. While the psychologist is using the DSM-5 in the background, what it should look like is two adults, working together to see if autism is the right fit for your experiences. If you do not feel that this is the process that you will experience with a particular psychologist or psychiatrist, you may need to look around for a different one. 

Some private psychologists provide once off consultation sessions where you can meet with a psychologist to discuss your thoughts around autism, answer any queries you might have and explore whether a full autism assessment is right for you. See our list of private practitioners for psychologists providing these.

Please note the above professionals referenced are for signposting purposes only, AsIAm does not endorse any one diagnostic service over another.

Four practitioners who do provide adult assessment and diagnosis of autism are:

Caroline Winstanley, Online practice providing child and adult autism assessments. Queries email

The Adult Autism Practice, Irish practice specialising in adult autism assessments. All assessments are remote and can work with people from all over Ireland. Bookings Queries email

Dr. Emer Bowman Dublin Well Woman Centre, 67, Pembroke Road , Ballsbridge, Dublin 4. T: +353 (01) 668-1108

Honan & Associates, 4 Molesworth Place, Dublin 2, Ireland.   E:

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