Understanding Autism
Autism is a lifelong neurodevelopmental difference that affects how people experience and interact with the world. It can influence communication, social interaction, sensory processing, routines, interests and the way information is processed.
Every autistic person is different. Some people need significant support in their daily lives, while others live independently and may not recognise that they are autistic until adulthood.
This guide explains autism, some of the ways autistic traits can present, and where to find further information, assessment and support in Wales.
What Is Autism?
Autism is a neurodevelopmental difference, which means the autistic brain develops and processes information differently rather than being a version of something that has gone wrong. It is not an illness, and it is not something that needs to be cured or fixed.
Autistic people may experience differences in areas including:
- Social communication and interaction
- Sensory processing
- Routines and predictability
- Focused or intense interests
- Processing information
- Emotional regulation
- Adapting to change
Autism is often described as a spectrum. That word does not simply mean a scale running from a little autistic to very autistic. It describes the fact that different autistic people have very different combinations of strengths, difficulties and support needs.
Support needs are also not fixed. The same person may manage comfortably in a familiar, well-suited environment and need much more support in a noisy, unpredictable or demanding one, and needs can change across different stages of life.
Autism Is Different for Everyone
There is no single way to look autistic. Some autistic people may:
- Communicate very confidently
- Make eye contact
- Have friendships and relationships
- Work or study successfully
- Live independently
…while still experiencing significant autistic traits or difficulties that other people may never see.
Other autistic people have substantial communication, sensory or daily-living support needs, and may use communication aids, need support with everyday tasks, or need carefully adapted environments.
Both of these are autism. Neither is more or less genuinely autistic than the other, and no single description will fit everyone.
Common Autistic Traits
Autistic traits vary considerably between individuals. Having some of these traits does not necessarily mean that someone is autistic.
Social communication
- Finding unwritten social rules difficult to interpret
- Finding it hard to know when to speak in conversations
- Interpreting language literally
- Finding sarcasm, implied meaning or ambiguity difficult
- Preferring direct and clear communication
- Finding some social situations tiring or overwhelming
Routines and predictability
- A preference for familiar routines
- Finding unexpected changes difficult
- Wanting to know in advance what will happen
- Using routines to create predictability
- Distress or anxiety when plans change suddenly
Sensory differences
- Sounds and background noise
- Lights and visual environments
- Smells
- Textures, fabrics and clothing
- Touch and physical contact
- Temperature
- Food textures and tastes
- Busy or crowded environments
Interests and focus
- Highly focused interests
- Developing detailed knowledge about particular subjects
- Spending substantial time on preferred interests
- Becoming deeply absorbed in activities
Repetitive movements and stimming
Stimming is a natural and often helpful part of how many autistic people regulate themselves. It can include:
- Rocking
- Hand movements
- Tapping
- Pacing
- Repeating sounds or phrases
- Using particular objects
- Other repetitive movements
Stimming can help with regulation, concentration, expression or managing sensory input. Unless something is causing harm, there is usually no reason to stop it.
Sensory differences are covered in more detail in the sensory processing section below.
Autism, Strengths and Individual Differences
Autism is often described only through difficulties, which gives an incomplete picture. Many autistic people describe strengths that come with the way they think, such as:
- Strong attention to detail
- Deep knowledge of particular subjects
- Persistence
- Logical or analytical thinking
- Creativity
- Honesty and direct communication
- Strong memory for areas of interest
- Different approaches to problem-solving
These are not universal autistic traits, and no autistic person should be expected to have particular abilities. Autistic people are as varied as anyone else, and being valued should never depend on having a recognisable talent.
How Can Autism Present in Children?
Autistic characteristics can become apparent at different ages. What people notice may involve:
- Communication
- Social interaction
- Play
- Sensory differences
- Routines
- Highly focused interests
- Emotional regulation
- Difficulty coping with unexpected change
Some children show noticeable differences from early childhood. For others, differences become clearer as social, communication or educational demands increase — often at school transitions, or when a child is expected to manage more independently.
Some children also cope well at school and are visibly overwhelmed at home once the effort of the day catches up with them. That difference between settings is common and does not mean the difficulties are not real.
Concerned about possible autism?
Learn about autism assessment for children and how the assessment process works.
How Can Autism Present in Adults?
Many autistic adults were not identified during childhood, particularly if they managed at school or did not fit the way autism was understood at the time. Experiences adults often describe include:
- Feeling different from other people without knowing why
- Finding social expectations difficult to interpret
- Needing significant recovery time after social situations
- A strong preference for routine
- Sensory sensitivities
- Intense or focused interests
- Consciously learning social behaviours
- Becoming overwhelmed by unexpected change
- Experiencing difficulties when demands exceed capacity
People sometimes begin considering autism after:
- Their child being assessed or diagnosed
- Difficulties at work or university
- Periods of increased demands
- Learning more about autism
- Recognising experiences described by other autistic people
Recognising this later in life can bring relief, and sometimes grief as well. Both reactions are common.
You can read more about adult autism assessment in Wales or about how the assessment process works.
Autism in Women and Girls
Autism can be overlooked in girls and women. Much of the early research and many of the best-known descriptions of autism were based on boys, so girls and women whose autism presents differently have often been missed, or given other explanations for their difficulties.
Some autistic girls and women may:
- Imitating or copying social behaviour
- Preparing conversations in advance
- Observing other people to work out how to behave
- Suppressing visible autistic behaviours
- Having interests that appear socially typical but are unusually intense
- Appearing socially capable while finding interaction exhausting
- Experiencing difficulties that become clearer as social demands increase
These experiences are not exclusive to women and girls. Men, boys and non-binary people also mask, and plenty of autistic women do not recognise themselves in this description at all.
What Is Autistic Masking?
Masking describes strategies some autistic people use consciously or unconsciously to hide, suppress or compensate for autistic traits in social situations.
Examples may include:
- Forcing eye contact
- Copying facial expressions or gestures
- Rehearsing conversations
- Suppressing stimming
- Copying other people's behaviour
- Carefully monitoring what to say
- Hiding sensory discomfort
Masking can make autism much less obvious to other people, and it may contribute to somebody being identified later in life. It also takes considerable effort, and many autistic people describe needing time alone afterwards to recover.
Autism and Sensory Processing
Sensory processing differences are a common part of being autistic. A person may be more sensitive to some kinds of sensory input and less sensitive to others, and the same person can be highly sensitive to certain experiences while actively seeking out others.
- Sound
- Background noise, alarms, sudden sounds and crowded environments.
- Light
- Bright or fluorescent lighting, flickering light and visual clutter.
- Touch
- Clothing labels and seams, certain fabrics and unexpected physical contact.
- Food
- Textures, tastes, smells, temperature and how food is presented.
- Movement and body awareness
- Seeking movement, differences in balance and awareness of body position.
Sensory input that other people barely register can be genuinely painful, exhausting or impossible to filter out. Small environmental adjustments — quieter spaces, softer lighting, ear defenders, predictable routines — often make a substantial difference.
Autistic Overload, Meltdowns and Shutdowns
Sensory, emotional, social or cognitive demands can sometimes build up beyond what a person is able to manage at that moment. When that happens, people often describe feeling overloaded.
Meltdown
An involuntary response to becoming overwhelmed that may involve an outward loss of control. It is not a tantrum, not manipulation and not deliberate bad behaviour.
Shutdown
An overwhelmed response that may involve becoming quiet, withdrawing, having difficulty communicating or needing to reduce interaction until capacity returns.
Both are responses to being overwhelmed rather than choices. Reducing demands, lowering sensory input and allowing recovery time are what people most often describe as helpful. If overload is frequent or distressing, it is worth discussing with a suitable professional who knows the person.
Can Someone Be Autistic and Have ADHD?
Yes. Autism and ADHD are different neurodevelopmental conditions, and a person can be both autistic and have ADHD.
Some traits can overlap or interact — for example a preference for routine alongside a need for novelty — which can make somebody's needs harder to recognise and can mean one is identified while the other is missed. Where both are relevant, it is worth asking a provider whether their assessment considers both.
Does Having Autistic Traits Mean I Am Autistic?
Many people can recognise individual autistic traits in themselves. Most people occasionally prefer routine, find noise irritating or dislike small talk.
Having one or several traits does not automatically mean somebody is autistic. An autism assessment considers a broader pattern of characteristics, developmental history and how those characteristics affect the person's life across different settings.
This page is general information and cannot tell you whether you or your child are autistic. Only a suitably qualified professional can carry out an assessment.
How Is Autism Assessed?
An autism assessment usually considers areas including:
- Developmental history
- Communication
- Social interaction
- Sensory experiences
- Routines and behaviours
- Current experiences and support needs
The exact process varies according to age, provider and individual circumstances. Some assessments involve several appointments and information from family members or schools, while others are more streamlined.
NHS or Private Autism Assessment?
People in Wales may be assessed through NHS pathways, usually following a referral from a GP or another professional, or may choose to arrange a private assessment. NHS assessment has no fee but waiting times vary considerably; private assessment involves a fee and may be available sooner.
Our dedicated pages cover this in more detail:
When Might Someone Consider an Autism Assessment?
Some people find that autistic traits form a consistent, long-standing pattern that affects areas of life such as:
- Education
- Employment
- Relationships
- Communication
- Sensory experiences
- Managing daily demands
- Emotional wellbeing
- Accessing appropriate support
Where that is the case, some people choose to look into assessment. Others recognise themselves in descriptions of autism and decide that a formal assessment would not add anything useful for them right now. Both are reasonable, and nobody has to pursue an assessment.
Why Do Some People Seek an Autism Diagnosis?
Reasons differ from person to person. They may include:
- Understanding themselves or their child better
- Making sense of lifelong experiences
- Identifying support needs
- Accessing appropriate adjustments or services
- Helping family members, schools or employers understand needs
- Providing a framework for discussing strengths and difficulties
Assessment is an individual decision, and the right answer depends on what a person hopes it will help with.
Language and Autism
People have different preferences about terminology.
Many autistic people prefer identity-first language — “autistic person” — because they see autism as part of who they are. Others prefer person-first language — “person with autism”. Families sometimes differ from each other too.
Autism Support Wales primarily uses respectful, neuro-affirming language and identity- first wording, while recognising that individual preferences vary. There is no single term that is correct for every autistic person, and the best approach is usually to ask and then use whatever somebody prefers for themselves.
Common Myths About Autism
Myth
Autistic people do not want friendships.
Reality
Autistic people vary enormously in their desire for relationships and social interaction. Some may want friendships but find particular aspects of social communication difficult or tiring.
Myth
You can always tell if somebody is autistic.
Reality
Autistic traits are not always visible. Some people mask or compensate for differences, particularly in certain environments.
Myth
All autistic people are the same.
Reality
Autism presents differently in every person, with different strengths, experiences and support needs.
Myth
Autism only affects children.
Reality
Autism is lifelong. Autistic children become autistic adults, and some people are not identified until adulthood.
Myth
Making eye contact means somebody cannot be autistic.
Reality
Some autistic people make eye contact and others do not. Eye contact alone cannot determine whether somebody is autistic.
What Should I Do If I Think I or My Child May Be Autistic?
Learning more about autism is often a useful first step, and there is no rush to decide anything. If you would like to explore assessment, Autism Support Wales provides information about assessment pathways in Wales and an independent directory of private providers serving Wales.
Frequently Asked Questions About Autism
Autism Support Wales is an independent information and directory service. Information on this page is for general information and should not be used to diagnose autism. If you have concerns about your own or your child’s development, health or wellbeing, speak to an appropriate healthcare or education professional.