Autism in Girls and Young Women: Understanding a Frequently Missed Presentation

Autism in girls and young women is one of the most consistently underidentified presentations in clinical and educational settings. For decades, the research, the diagnostic criteria and the public understanding of autism were built almost entirely on studies of young boys. The result is a diagnostic system that frequently fails to recognise autism when it presents differently — and it almost always presents differently in girls.

Many autistic girls and young women spend years, sometimes decades, being told they are fine, anxious, shy, too sensitive, or simply difficult. Some receive diagnoses of anxiety, depression or eating disorders without anyone identifying the underlying autistic profile driving those experiences. Others mask so successfully that no one around them suspects autism at all — including themselves.

This post explores what autism actually looks like in girls and young women, why it is so frequently missed, and what support can help. 

Why Autism Is Missed in Girls:
Several factors contribute to the consistent underidentification of autism in girls and young women.

First, girls are more likely to develop masking strategies — consciously or unconsciously suppressing or camouflaging autistic traits in order to appear socially typical. This can include carefully watching and imitating the social behaviour of peers, rehearsing conversations, developing social scripts, and working intensely to understand social rules that come naturally to neurotypical peers.

Second, autistic girls often have strong social motivation — a genuine desire to connect with others — which can make the social difficulties of autism less visible. The struggle is internal rather than external. She wants to connect but finds it exhausting, confusing and hard to sustain.

Third, the presentations that are most readily recognised as autism — limited social interest, restricted and repetitive behaviours, unusual speech patterns — are often less prominent or differently expressed in girls. Her intense interests may be in areas that appear more socially acceptable, such as animals, books, psychology or specific fandoms. Her need for routine may not be immediately obvious.

The cumulative effect is that autistic girls are identified later, assessed less frequently, and more likely to receive other diagnoses first.

How Autism May Present in Teenage Girls:
For parents, some of the signs of autism in a teenage girl can look like:

- Deep, passionate interests that she pursues with significant intensity and focus
- Difficulty navigating the unspoken social rules of peer relationships, despite genuinely wanting to connect
- Exhaustion after social situations, even ones she appeared to enjoy
- Significant sensitivity to sensory input — noise, light, texture, smell or physical touch
- A strong need for routine and predictability, with distress when plans change unexpectedly
- Difficulty understanding sarcasm, implied meaning or the gap between what people say and what they mean
- Intense emotional responses that can feel hard to regulate
- A strong sense of justice and fairness, with significant distress when these are violated
- Preferring one or two close friendships over larger social groups
- Coming home from school completely exhausted while appearing to have managed fine

How Autism May Present in Young Women Aged 18 to 25:
For young women in early adulthood, autism often becomes harder to navigate as the social demands of university, work and independent living increase. Many young women receive their identification in this period, following a lifetime of struggling without understanding why.

Common experiences include:

- Burnout from years of sustained masking, often triggered by a significant life transition
- Difficulty with the informal social demands of university or workplace environments
- Relationships that feel confusing, one-sided or difficult to sustain
- Sensory overwhelm in environments like open-plan offices, university campuses or shared housing
- A growing sense of identity confusion — not knowing who they are without the mask - Relief, grief and complexity following a late autism identification
- Questions about how to move forward and what a life that works for their brain actually looks like

Autistic Burnout:
Autistic burnout is one of the most significant and least understood experiences of autistic girls and young women, and deserves specific attention.

Burnout occurs when the nervous system has been working at capacity for an extended period — often from years of masking, navigating neurotypical environments and managing sensory and social demands without adequate support. It is not simply tiredness. It is a state of physical, cognitive and emotional exhaustion that can result in a loss of previously held skills, withdrawal from social life, an inability to manage everyday tasks and a profound sense of not knowing who you are anymore.

Autistic burnout is frequently mistaken for depression, and the two can co-occur. Understanding which is driving the presentation changes the support that is most helpful.

Recovery from burnout is possible. It typically involves significant reduction in demands, increased rest and sensory regulation, and support from someone who genuinely understands the autistic experience. 

Masking and Identity:
For many autistic girls and young women, masking becomes so automatic that it is invisible — even to themselves. The question of who they are without the mask can feel genuinely difficult to answer, particularly for those who have been masking since early childhood.

A late autism identification can bring enormous relief alongside a complex process of re-evaluating past experiences. Questions that often arise include:

- Who am I when I stop performing?
- How do I grieve the years I spent struggling without understanding why?
- How do I understand my past relationships and experiences through this new lens?
- What does a life that genuinely works for my brain actually look like? These are not simple questions.

They deserve genuine, thoughtful support — not just a diagnosis and a link to resources.

Common Co-Occurring Conditions:
Autism in girls and young women frequently co-occurs with other conditions, including:

- ADHD — autism and ADHD co-occur at high rates, particularly in girls - Anxiety disorders, including social anxiety and generalised anxiety
- Depression and low mood, often connected to burnout and chronic masking
- Eating difficulties and disordered eating patterns
- Premenstrual Dysphoric Disorder (PMDD), which interacts with sensory sensitivity and emotional regulation
- Hypermobile Ehlers-Danlos Syndrome (hEDS) and other connective tissue conditions, which research indicates co-occur with autism at higher rates than in the general population
- Mast Cell Activation Syndrome (MCAS)
- Sensory processing differences
- Sleep difficulties Understanding these overlaps supports a more complete picture of each young person's experience — and more targeted, effective support.

Talking to a GP or Psychologist About Autism:
If you recognise these patterns in yourself or your daughter, speaking to a GP or psychologist is a helpful first step. It can help to:

- Write down specific examples of daily experiences rather than trying to describe things generally
- Note both the challenges and the strengths — deep focus, loyalty, attention to detail, creativity and a strong sense of justice are also part of the autistic profile
- Include observations from teachers or others who see her in different environments
- Track patterns over time, including what situations are most and least manageable

You do not need a diagnosis to begin psychological support. Therapy can be helpful at any stage — whether you are exploring autism for the first time, adjusting to a recent identification, or navigating burnout and identity questions following a late identification.

How Psychological Support Can Help:
Psychological support for autistic girls and young women draws on evidence-based approaches including Acceptance and Commitment Therapy (ACT), Cognitive Behavioural Therapy (CBT) and Dialectical Behaviour Therapy (DBT), adapted for autistic presentations rather than applied from a neurotypical framework.

ACT supports the development of a clear sense of values and identity that is grounded in who each young person actually is, rather than who she has learned to perform. CBT helps identify and work with the thought patterns that are causing difficulty, adapted for the specific cognitive style of autism. DBT builds practical skills for emotional regulation and distress tolerance.

Support at our practice is neuroaffirming. Autism is understood as a different way of experiencing and engaging with the world — not a deficit to be corrected or a set of behaviours to be normalised.

For more information about our approach to neurodiversity, visit our Neurodiversity Support page.

Assessments:
Psychological assessments for Autism Spectrum Disorder are available for girls and young women aged 12 to 25. A comprehensive assessment can help clarify the presentation and provide documentation for school accommodations, university disability support and NDIS purposes.

Assessment availability and fees vary depending on the type and complexity of the assessment. Some components may require an in-person component depending on individual circumstances.

For more information about assessment fees and funding options, visit our Fees and Funding page.

Further Reading and Trusted Resources
- Amaze (Autism Victoria): amaze.org.au
- Autism Awareness Australia: autismawareness.com.au
- Raising Children Network: raisingchildren.net.au
- Australian Advisory Board on Autism: autismawareness.com.au

This article provides general information only and is not a substitute for personalised psychological or medical advice, assessment or treatment. If you are in crisis or feel unsafe, please call Triple Zero (000). You can also contact Lifeline on 13 11 14 for 24-hour support.

Ready to Get Started? Support for autistic girls and young women is available now, with no waitlist. Whether you are ready to book or simply have a question, send an email to info@nvpsychology.com.au — we are always more than happy to help.