Many autistic girls reach their teenage years without anyone recognising that they are autistic. While autism has historically been viewed through a predominantly male lens, research increasingly shows that autistic girls often present differently to autistic boys, contributing to delayed identification and diagnosis. Girls may appear socially successful on the surface, yet expend enormous amounts of energy trying to navigate a social world that feels confusing, overwhelming and exhausting.
In this evidence-based guide, we explore the signs of autism in teenage girls, why autism is often missed in females, and what parents, carers and professionals should look for.
What Is Autism?
Autism Spectrum Disorder (ASD) is a lifelong neurodevelopmental difference that affects how a person experiences, understands and interacts with the world around them. Autism is present from early childhood, although the signs may not become fully apparent until social and environmental demands exceed an individual’s ability to cope. The National Institute for Health and Care Excellence (NICE) recognises that autism can present differently across individuals and may be less obvious in girls and young women.
Why Is Autism Often Missed in Teenage Girls?
For decades, much of the research underpinning autism diagnostic criteria was carried out predominantly with boys. We now know that many autistic girls do not fit traditional stereotypes of autism. Instead of displaying obvious social differences, they may observe, imitate and learn social behaviours from peers. Researchers often refer to this as camouflaging or masking.
Masking can include:
- Copying other people’s facial expressions
- Rehearsing conversations beforehand
- Learning social rules intellectually rather than intuitively
- Forcing eye contact despite discomfort
- Hiding distress until they are alone
- Mimicking peers to avoid standing out
Research has shown that autistic girls may engage in camouflaging more frequently than autistic boys, which can contribute to delayed diagnosis and increased emotional exhaustion.
Why Do Difficulties Often Become More Noticeable During Adolescence?
Many autistic girls appear to cope reasonably well during primary school. However, adolescence brings increasing social complexity, greater academic demands, more independence and significant hormonal changes.
Teenage friendships become less structured and rely more heavily on:
- Social intuition
- Understanding unspoken rules
- Managing group dynamics
- Interpreting subtle social cues
- Maintaining multiple friendships simultaneously
For an autistic teenager, these demands can become increasingly overwhelming, causing underlying difficulties to become more noticeable
Common Signs of Autism in Teenage Girls
1. Friendship Difficulties
One of the most common signs of autism in teenage girls is difficulty navigating friendships.
An autistic teenager may:
- Have one close friend rather than a large friendship group
- Struggle to maintain friendships over time
- Feel confused by social politics or friendship groups
- Be vulnerable to bullying or manipulation
- Feel excluded but be unable to identify why
- Frequently fall out with friends
- Copy others to fit in
Importantly, many autistic girls desperately want friendships but find maintaining them exhausting and unpredictable.
2. Social Exhaustion
Many parents describe their daughter appearing sociable at school but completely exhausted afterwards.
Signs may include:
- Needing significant time alone after school
- Spending evenings isolated in their bedroom
- Being unable to tolerate social activities after a school day
- Appearing emotionally drained after social interactions
This exhaustion often reflects the effort involved in continuously monitoring and managing social behaviour.
3. School-Related Anxiety
Anxiety is particularly common amongst autistic teenage girls.
You may notice:
- Reluctance to attend school
- Frequent physical complaints such as headaches or stomach aches
- Anxiety about changes to routine
- Significant stress around homework or exams
- Difficulty coping with unstructured times such as lunch breaks
- Emotionally based school avoidance
In some cases, anxiety is recognised long before anyone considers autism.
4. Masking and Camouflaging
Many autistic girls become experts at hiding their difficulties.
Examples include:
- Learning “scripts” for conversations
- Studying television characters to copy social behaviours
- Watching peers to learn how to behave
- Forcing themselves to join social activities
- Suppressing autistic behaviours to avoid criticism
Although masking may help a teenager fit in temporarily, research suggests it is associated with increased anxiety, depression and burnout.
5. Sensory Sensitivities
Sensory differences are a core feature of autism and often become more noticeable during the teenage years.
Teenage girls may be particularly sensitive to:
- Noise in busy classrooms or corridors
- Bright lighting
- Strong smells
- Certain fabrics or school uniforms
- Crowded environments
A teenager may avoid specific places, become overwhelmed unexpectedly, or appear unusually irritable in sensory-rich environments.
6. Strong Need for Routine and Predictability
Many autistic teenage girls feel more comfortable when life is predictable.
Signs may include:
- Becoming distressed by unexpected changes
- Constantly checking plans
- Needing advance notice of activities
- Becoming anxious if routines are disrupted
- Wanting clear information about upcoming events
These behaviours often reflect efforts to reduce uncertainty rather than stubbornness or oppositional behaviour.
7. Intense Interests
Autistic girls often develop highly focused interests.
Unlike stereotypical examples, these interests may appear age-appropriate and socially acceptable, making them easier to miss.
Examples include:
- Animals
- Books
- Psychology
- Music
- Fictional characters
- Fashion
- Social justice issues
- Celebrity culture
What distinguishes autistic interests is often their intensity, depth and importance to emotional wellbeing.
8. Emotional Dysregulation
Many autistic girls experience emotions intensely.
This may include:
- Overwhelm following minor setbacks
- Meltdowns after holding emotions in all day
- Sudden emotional reactions
- Difficulty identifying or explaining feelings
- Shutdowns where they become withdrawn and unable to communicate
Often these reactions occur after prolonged stress, sensory overload or social exhaustion.
9. Feeling Different From Peers
A common theme reported by autistic women diagnosed later in life is feeling “different” without knowing why.
A teenage girl may:
- Feel disconnected from peers
- Struggle to understand social expectations
- Describe feeling as though everyone else received a social rulebook
- Constantly worry about saying the wrong thing
- Feel they are pretending to be someone else
These experiences can have a significant impact on self-esteem and mental health
Mental Health Difficulties Can Hide Autism
Many autistic girls first come to professional attention because of:
- Anxiety
- Depression
- Eating difficulties
- Self-harm
- School avoidance
- Obsessive-compulsive symptoms
While these conditions may genuinely be present, research suggests that autism is frequently overlooked when clinicians focus solely on mental health symptoms. Understanding the underlying autistic presentation can be crucial in ensuring appropriate support.
When Should Parents Seek an Autism Assessment?
Consider seeking professional advice if your teenager:
- Has persistent difficulties with friendships
- Experiences significant social exhaustion
- Shows sensory sensitivities affecting daily life
- Relies heavily on routines and predictability
- Appears to mask difficulties at school
- Experiences severe anxiety alongside social difficulties
- Has always seemed different from peers
- Has a history of developmental differences dating back to childhood
Autism is present from early childhood, even if the signs become more obvious during adolescence. A comprehensive assessment will therefore explore both current experiences and early developmental history.
Final Thoughts
The signs of autism in teenage girls are often subtle, complex and easily misunderstood. Many girls become skilled at masking their differences, leading teachers, professionals and even family members to underestimate the extent of their challenges. Beneath the surface, however, many are working incredibly hard to navigate friendships, cope with sensory overload and manage the demands of adolescence.
Greater awareness of the female presentation of autism is helping more girls receive the understanding and support they need. Recognising autism is not about focusing on deficits. It is about understanding a young person’s experiences, validating their challenges and celebrating their strengths so they can thrive as their authentic selves.
References
Halsall, J., Clarke, C. and Crane, L. (2021) ‘“Camouflaging” by adolescent autistic girls who attend both mainstream and specialist resource classes: Perspectives of girls, their mothers and their educators’, Autism, 25(7), pp. 2074–2086. https://doi.org/10.1177/13623613211012819
Lai, M.C., Lombardo, M.V., Auyeung, B., Chakrabarti, B. and Baron-Cohen, S. (2015) ‘Sex/gender differences and autism: Setting the scene for future research’, Journal of the American Academy of Child and Adolescent Psychiatry, 54(1), pp. 11–24. https://doi.org/10.1016/j.jaac.2014.10.003
Lai, M.C. and Szatmari, P. (2020) ‘Sex and gender impacts on the behavioural presentation and recognition of autism’, Current Opinion in Psychiatry, 33(2), pp. 117–123. https://doi.org/10.1097/YCO.0000000000000575
Lockwood Estrin, G., Milner, V., Spain, D., Happé, F. and Colvert, E. (2021) ‘Barriers to autism spectrum disorder diagnosis for young women and girls: A systematic review’, Review Journal of Autism and Developmental Disorders, 8(4), pp. 454–470. https://doi.org/10.1007/s40489-020-00225-8
Mandy, W. (2019) ‘Social camouflaging in autism: Is it time to lose the mask?’, Autism, 23(8), pp. 1879–1881. https://doi.org/10.1177/1362361319878559
National Institute for Health and Care Excellence (NICE) (2021) Autism spectrum disorder in under 19s: Recognition, referral and diagnosis (CG128). London: NICE. Available at: https://www.nice.org.uk/guidance/cg128
Sedgewick, F., Hill, V. and Pellicano, E. (2016) ‘It’s different for girls: Gender differences in the friendships and conflict of autistic and neurotypical adolescents’, Autism, 20(8), pp. 1020–1032.
Wood-Downie, H., Wong, B., Kovshoff, H., Mandy, W., Hull, L. and Hadwin, J.A. (2021) ‘Sex/gender differences in camouflaging in children and adolescents with autism’, Journal of Autism and Developmental Disorders, 51(4), pp. 1353–1364. https://doi.org/10.1007/s10803-020-04615-
