Autistic masking means hiding or covering up autistic traits, on purpose or out of habit, so that you come across as non-autistic. The National Autistic Society gives the same definition and says it goes by other names too: camouflaging or passing.
That is the short answer. The longer one is that masking is not a single behaviour, it is not rare among the people who have been studied, it buys real things (jobs, friendships, safety), and the main cost is exhaustion. What follows is what the research and the main UK autism charity say, with the limits of the evidence stated where they matter.
What counts as masking? Examples from the research
One of the best-known papers is a 2017 study by Laura Hull and colleagues in the Journal of Autism and Developmental Disorders. They asked 92 autistic adults (55 women, 30 men and 7 who gave their gender as other) about camouflaging in social situations, using an online questionnaire with open questions. Eighty-six of the 92 said they camouflage. The authors describe two techniques sitting under that one word:
- Masking, in the narrow sense: suppressing or hiding autistic behaviour, such as stimming, copying other people’s behaviour and clothing, or adopting a character or role.
- Compensation: using learned rules to fill social gaps, such as forcing eye contact, putting on expected facial expressions, asking other people questions, limiting what you share about yourself, or rehearsing conversations beforehand.
The National Autistic Society’s examples overlap heavily: mirroring facial expressions, changing your tone or animation, swapping obvious stims for less visible ones, hiding reactions to sensory discomfort, scripting conversations, hiding interests, copying how others dress. It adds that people often learn all this by watching and copying others.
Two details are easy to miss. The line between masking and ordinary politeness is effort: the Society says what makes it different is the exhausting work of acting in ways that do not come naturally. And “consciously or unconsciously” is in the definition for a reason. Some people mask on purpose, some do it without noticing, and the Society notes it can become routine or subconscious.
Why people mask
Hull’s participants gave two broad reasons. The first was assimilation: fitting in, avoiding bullying and discrimination, improving the odds of getting qualifications and a job. The second they described as wanting to know and be known, meaning making friends and forming relationships, which several found hard without camouflaging.
Work is where the pressure is easiest to see. A 2023 UK study in PLOS ONE by Amber Pryke-Hobbes and colleagues analysed open-text survey answers from a final sample of 411 adults: 272 autistic (224 clinically diagnosed, 48 self-identified), 78 non-autistic neurodivergent and 61 neurotypical. Autistic participants described masking at work as protection against bullying, judgement and career setbacks, and as a way to keep a job and move up in it. They also said they had less control over masking at work than in social settings.
One finding from that paper cuts against a common assumption. Neurotypical participants reported masking at work too, so the authors argue it is not exclusive to neurodivergent people. What differed was the pressure: autistic and other neurodivergent participants described pressures to mask that were unique to them and tied to limited workplace understanding of neurodiversity.
What masking costs
Exhaustion was the most consistent effect in Hull’s data: mental, physical and emotional drain that often needed recovery time alone. Participants also described constant self-monitoring and anxiety about whether it had worked, and many felt inauthentic, lonely or cut off from who they really were. The workplace paper adds extreme tiredness, worse mental and physical health, burnout, and difficulty getting workplace adjustments.
The Society also lists meltdowns and shutdowns, isolation, low self-esteem, and mental health difficulties including self-harm and suicidality. It lists missed or delayed diagnosis too, which matters here. Hull found camouflaging could delay a diagnosis or make other people doubt it, which means support needs can go unmet. If you have ever heard “but you don’t look autistic,” this is one way it happens. The site has a first-person account of exactly that comment: the day I was accused of not being autistic enough.
The aftermath is its own subject. If masking has already worn you down, the site’s guide to autistic burnout recovery while you still have to work is written for that situation, and “But you don’t LOOK autistic?” is a first-person piece about the mask and the comment that follows it.
It is not all cost
A minority in Hull’s sample felt relief or a sense of achievement from camouflaging successfully; 9 men and 6 women, so 60% of that small group were men. The National Autistic Society also names benefits: safety, friendships, employment and confidence. It says autistic people describe a seemingly impossible choice between fitting in and protecting their mental health and access to diagnosis and support. That is a more honest framing than “masking is bad,” and it explains why telling someone to simply stop is not much of a plan.
What helps, according to the National Autistic Society
- Allow recovery time after social situations.
- Manage energy with a framework such as energy accounting or spoon theory.
- Seek a diagnosis, or consider self-identification.
- Spend time with other autistic people.
- Explore who you are underneath through therapy, journaling or trusted people.
- Some people unmask gradually, starting with people who feel safe (one autistic person quoted on the NAS page describes this).
In the workplace study, a formal diagnosis often gave autistic participants more freedom to unmask. None of this is trial evidence. These are suggestions from a charity and reports from participants, and nobody has tested the options against each other. The Society itself says research on how common masking is remains limited.
Do only autistic women mask?
No, but the picture is incomplete. The National Autistic Society says women, girls and non-binary people may mask more, as may people diagnosed in adulthood. Hull’s team made no statistical gender comparisons and say their study was not designed to test whether camouflaging explains the gap in diagnosis between men and women. In the workplace study, 59.9% of the autistic group were women, which the authors flag as a possible confound for comparing the groups.
How far can this evidence be trusted?
Both studies are self-selected. Everyone in Hull’s sample had a confirmed diagnosis and had to complete a text-based online survey, so the findings cannot speak for people with intellectual disability or those who cannot express themselves in written English. The workplace sample was predominantly White British. Neither study measured how well anyone’s masking actually worked. Read them as a map of what people report, not a count of how many people are affected.
If you are wondering whether any of this points toward an assessment, here is how an autism assessment works and what the signs look like.
