Yes, autism spectrum disorder (ASD) can be diagnosed in adults. Many individuals reach adulthood without an earlier diagnosis, often because their traits were misunderstood or masked, particularly in structured environments like school or work.

Seeking an adult ASD diagnosis can help explain lifelong challenges related to social interaction, sensory sensitivities, and communication. It can also provide validation, self-understanding, and access to support—such as workplace accommodations, therapy, and peer networks.

If you’ve always felt different but haven’t understood why, an ASD assessment can help you make sense of your experiences and explore the best ways to move forward.

The length of an ASD assessment varies, but it is typically a multi-stage process that includes:

• A detailed clinical interview – A structured discussion about developmental history, social interactions, sensory experiences, and daily challenges.
• Standardised diagnostic tools – These may include questionnaires, observational assessments, and tasks designed to identify autistic traits.
• Informant input  – A parent, partner, or close family member may be asked to share insights into your early development and current behaviour.

Duration:

• The assessment itself usually takes several hours, often split into one or more sessions.
• A diagnostic report with personalised recommendations is provided afterward.

No, a referral is not required to access an ASD assessment at The Neurodevelopmental Clinic. You can self-refer directly on our online booking portal, which allows for quicker access to diagnostic services without the delays often associated with GP referrals.

Self-referral means that if you suspect you may be autistic, you can take the first step on your own terms, without needing approval from a medical professional.

We do also accept referrals from healthcare professionals, which can help provide additional background information.

Autism is not something that needs to be “treated” in the traditional sense, but many autistic individuals benefit from tailored support that helps them navigate daily life, relationships, and specific challenges.

Psychological Therapies

Therapy can help autistic individuals with anxiety, emotional regulation, and coping strategies. Some effective approaches include:

• Cognitive Behavioural Therapy (CBT) – Adapted versions can help with managing anxiety, rigid thinking, and emotional regulation.
• Social Skills Training – Teaching strategies for social interactions, nonverbal cues, and relationship-building.

Practical Support

• Occupational Therapy – Helping with sensory sensitivities, executive functioning, and independent living skills.
• Speech and Language Therapy – Supporting social communication skills, particularly in work and personal relationships.
• Workplace and Educational Adjustments – Applying for reasonable accommodations, such as flexible working hours, quiet spaces, and assistive technology.

Community and Peer Support

• Autism support groups – Many autistic adults find it helpful to connect with others who share similar experiences.
• Mentoring and coaching – One-on-one guidance for managing work, relationships, and daily responsibilities.

If an ASD diagnosis is not confirmed, this does not mean your experiences and challenges are not valid. Many conditions share overlapping traits with autism, such as ADHD, anxiety, sensory processing differences, or complex trauma.

Following your assessment, we will provide a clear explanation of the findings and offer guidance on next steps. This may include:

• Exploring other neurodevelopmental or mental health conditions that could explain your experiences.
• Recommendations for further assessments if more information is needed.
• Strategies and resources tailored to your specific strengths and challenges, even without a formal diagnosis.
• Support for managing difficulties in areas like communication, emotional regulation, or daily functioning.

Our goal is to ensure you receive the understanding and support you need, whether or not you receive an ASD diagnosis.

Supporting a loved one with Autism Spectrum Disorder (ASD) starts with understanding and acceptance. Here are a few key ways you can help:

• Educate Yourself – Learn about ASD, including how it affects communication, sensory experiences, and social interactions. This can help you better understand their unique perspective.
• Respect Their Needs & Boundaries – Many autistic individuals experience sensory sensitivities or social exhaustion. Be patient and accommodating of their preferences, whether that means adjusting environments or giving them space when needed.
• Encourage & Advocate – Help them access resources, therapies, or accommodations in education, work, or daily life. If needed, advocate for their rights and inclusion.
• Be a Supportive Presence – Sometimes, simply being there and offering reassurance is enough. Listen without judgment, validate their experiences, and respect their way of navigating the world.

Every autistic individual is unique, so the best support comes from open communication and a willingness to adapt.