Are Late Autism Diagnosis Rates in Adults Expected to Continue Rising? 

Trends in adult autism diagnosis have been steadily increasing in recent years, and experts believe this trend will continue. As diagnostic awareness expands, more adults are recognising traits of autism in themselves, leading to a higher demand for evaluations. Previously, autism diagnoses were often overlooked or misinterpreted in adults, but the growing understanding of late identification has changed this. With increasing recognition and a shift towards neurodiversity acceptance, it is likely that more adults will be diagnosed in the future. Future projections indicate that these trends will persist as awareness continues to grow. 

Why Are Late Autism Diagnoses Increasing? 

One of the main reasons for the rise in diagnoses is a greater societal understanding of autism and how it manifests differently in adults compared to children. Adults with autism may have developed coping mechanisms that mask symptoms, making it more difficult to recognise the disorder. With an increased focus on diagnosis, individuals are more informed about the signs of autism, prompting them to seek out evaluations. Additionally, healthcare professionals have become more adept at identifying autism in adults, further contributing to rising rates. 

The increasing recognition of autism in adulthood allows for timely intervention, better mental health outcomes, and access to tailored support services. Adult autism diagnoses can provide individuals with a clearer understanding of their behavioural patterns, empowering them to seek appropriate interventions. Whether through therapy, employment accommodations, or support groups, having a diagnosis can improve overall well-being. 

For personalised support, visit providers like Autism Detect for personal consultations tailored to your needs. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to late diagnosis in adults.

Beatrice Holloway, MSc

Author

Beatrice Holloway is a clinical psychologist with a Master’s in Clinical Psychology and a BS in Applied Psychology. She specialises in CBT, psychological testing, and applied behaviour therapy, working with children with autism spectrum disorder (ASD), developmental delays, and learning disabilities, as well as adults with bipolar disorder, schizophrenia, anxiety, OCD, and substance use disorders. Holloway creates personalised treatment plans to support emotional regulation, social skills, and academic progress in children, and delivers evidence-based therapy to improve mental health and well-being across all ages.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy.

Dr. Rebecca Fernandez, MBBS

Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy.