Understanding Autism: A Lifespan Overview

Understanding autism, understanding people, and understanding how small changes can transform lives.

Estimated reading time: 18--22 minutes

Introduction

“If you've met one person with autism, you've met one person with autism.”— Professor Stephen Shore

Few quotations capture the nature of autism more accurately than these words.

Autism is often spoken about as though it were a single condition with a recognisable set of characteristics. In reality, no two autistic people are exactly alike. Each person has their own unique pattern of strengths, differences, experiences and support needs.

One autistic person may find social situations exhausting but cope well with change.

Another may thrive socially yet find sensory environments overwhelming.

One person may have an exceptional memory for detail, while another's greatest strengths may lie in creativity, problem-solving or recognising patterns that others overlook.

Autism cannot be understood through stereotypes.

It can only be understood by understanding the individual.

Autism is a lifelong neurodevelopmental condition. This means that autistic people are born with brains that develop differently from those of most people. Autism is not an illness, it is not caused by poor parenting, and it is not something that someone simply develops later in life.

Autism is one form of being neurodivergent.

The term neurodiversity recognises that there is natural variation in the way human brains develop and function. Most people fall within the broad range that society considers typical. Others have patterns of thinking, learning, communicating or experiencing the world that differ sufficiently from this majority that they are described as being neurodivergent.

Being neurodivergent is not inherently positive or negative.

Like every aspect of human diversity, it brings both strengths and challenges.

Importantly, many of the challenges experienced by autistic people do not arise simply because they are autistic. They arise because they are trying to function in environments that are largely designed around the needs and expectations of neurotypical people.

Throughout this article we will explore not only what autism is, but what it may feel like to experience the world as an autistic person.

More importantly, we will explore how understanding those experiences can help families, schools, employers and society make relatively small changes that can have a profound effect on quality of life.

What Is Autism?

Autism affects the way people experience and interact with the world around them.

It may influence:

• communication.
• social interaction.
• sensory processing.
• responses to change and uncertainty.
• attention to detail.
• executive functioning.
• emotional regulation.
• the way information is processed and interpreted.

However, autism is far more than a collection of characteristics listed in a diagnostic manual.

It is a different pattern of neurological development that influences how an individual experiences everyday life.

For some people, these differences may have relatively little impact in supportive environments.

For others, the same differences may become highly disabling when environments are overwhelming, unpredictable or fail to recognise their needs.

This is why understanding the individual is always more important than relying on stereotypes.

Understanding the Autism Spectrum

One of the greatest misconceptions about autism is that the spectrum runs from "mild" to "severe".

It does not.

The autism spectrum is not a straight line.

It is better understood as a multidimensional profile.

An autistic person may have:

• significant sensory sensitivities.
• relatively few communication difficulties.
• exceptional attention to detail.
• considerable difficulty coping with uncertainty.
• outstanding long-term memory.
• challenges with planning and organisation.

Another autistic person may have a completely different profile.

This is why Professor Stephen Shore's quotation remains so important:

"If you've met one person with autism, you've met one person with autism."

Throughout this Knowledge Hub we often describe this as a spiky profile.

Rather than imagining autism as a line running from "less autistic" to "more autistic", it is often more helpful to imagine a profile with peaks and troughs. Many autistic people have marked differences between areas in which they excel and areas in which they experience significant difficulty.

No two spiky profiles are identical.

(Suggested illustration: A radar chart showing strengths and challenges across areas such as communication, sensory processing, executive functioning, predictability, emotional regulation, attention to detail and motor coordination. Include three different example profiles to reinforce that there is no single "autistic profile".)

Autism, Autism Spectrum Disorder and Autism Spectrum Condition

Current diagnostic manuals, including DSM-5-TR and ICD-11, use the term Autism Spectrum Disorder (ASD).

Some autistic people are comfortable with this terminology.

Others prefer the term Autism Spectrum Condition (ASC) because they feel it better reflects autism as a difference in neurological development rather than something that is inherently disordered.

Throughout this Knowledge Hub we generally use the term autism, except when referring specifically to diagnostic criteria, legislation or published research.

Language continues to evolve, and respectful discussion of these differences is important.

Autism Across the Lifespan

Autism is present from birth.

However, the way it is recognised and experienced often changes throughout life.

Some children are recognised in early childhood because their differences are readily apparent.

Others develop ways of adapting to their environments that mean they are not identified until adolescence or adulthood.

Many adults describe spending years wondering why everyday life seemed more difficult for them than for other people.

They may have worked exceptionally hard simply to achieve the same outcomes as their peers, while believing that their difficulties reflected a personal failing rather than a different way of experiencing the world.

For many people, diagnosis provides something they have never previously had.

An explanation.

Receiving a diagnosis does not change who someone is.

It does not remove every challenge.

What it often changes is how people understand themselves.

Years of self-criticism can begin to give way to self-understanding.

Instead of asking,

"What is wrong with me?"

people often begin asking,

"How does my brain work, and what changes will help me live well?"

For many autistic people, that change in understanding can itself have a profound positive effect on mental wellbeing.

Diagnosis is therefore not the end of the journey.

For most people, it is the beginning.

Understanding Social Communication

One of the most common misunderstandings about autism is the idea that autistic people are "poor communicators".

This is not an accurate description.

Autistic people communicate.

Neurotypical people communicate.

The difference is often that autistic and non-autistic people may communicate in different ways, interpret information differently and place importance on different aspects of communication.

Communication is not simply about speaking words.

It involves many different processes, including:

• understanding spoken language.
• interpreting tone of voice.
• recognising facial expressions.
• understanding body language.
• knowing when to speak or listen.
• interpreting implied meanings.
• understanding social expectations that are often not explicitly explained.

Many of these processes happen automatically for neurotypical people.

For some autistic people, these processes may require much more conscious effort.

This does not mean they are unable to communicate.

It means they may be communicating using a different neurological framework.

Different Communication Styles, Not Better or Worse Communication

One of the most important principles when thinking about autism is that communication differences are not the same as communication failures.

Autistic and neurotypical people often have different communication styles.

Neither style is inherently correct.

Neither style is inherently wrong.

The difficulty arises when one group assumes that their own communication style is the only natural or appropriate way to communicate.

For example, autistic people may often prefer:

• clear and direct communication.
• precise language.
• honesty over social convention.
• time to process information before responding.
• communication that focuses on meaning and purpose.

Neurotypical people may often place greater emphasis on:

• indirect communication.
• reading between the lines.
• interpreting tone and facial expressions.
• social conventions that are understood without being stated.

Neither approach is superior.

They are different ways of communicating.

Effective communication requires adaptation from both sides.

It is not the responsibility of autistic people alone to learn how to communicate in ways that neurotypical people find comfortable.

Equally, neurotypical people can develop a better understanding of autistic communication styles and adjust their own expectations.

A genuinely inclusive approach recognises that communication is a shared responsibility.

The aim is not for one group to become more like the other.

The aim is for both groups to develop enough understanding that communication becomes easier, more respectful and more effective.

The Double Empathy Problem

For many years, difficulties in communication between autistic and non-autistic people were viewed primarily as a problem within the autistic person.

The assumption was that autistic people lacked the ability to understand social communication.

The double empathy problem, first described by Professor Damian Milton in 2012, offers a different explanation.

It suggests that communication difficulties between autistic and non-autistic people often arise because both groups may misunderstand each other.

In other words, the difficulty is not simply:

"Autistic people struggle to understand non-autistic people."

It is also:

"Non-autistic people may struggle to understand autistic people."

This is an important shift in perspective.

Communication difficulties are often not caused by one person failing to understand the other.

They arise because two people with different experiences, expectations and communication styles are attempting to interpret each other.

When Intentions Are Misunderstood

One of the most significant challenges experienced by many autistic people is that their behaviour is often interpreted through a neurotypical lens.

Humans naturally make assumptions about other people's intentions based on their own experiences, expectations and ways of communicating.

Usually this works reasonably well because many people share similar social expectations.

However, when someone communicates or behaves differently from what is expected, those assumptions can become inaccurate.

A behaviour that is neutral, helpful or positive in intention may be interpreted negatively.

For example:

• Direct communication may be interpreted as being rude or insensitive, when the intention may be honesty and clarity.
• Asking detailed questions may be interpreted as being argumentative, when the intention may be to understand properly.
• Wanting plans to remain predictable may be interpreted as being controlling, when the intention may be to reduce uncertainty and manage stress.
• Taking time before responding may be interpreted as disinterest, when the person may simply be processing information.
• Offering practical solutions may be interpreted as a lack of empathy, when the intention may be to help solve a problem.

These misunderstandings can have significant consequences.

An autistic person may be unfairly described as:

• difficult.
• rude.
• stubborn.
• uncooperative.
• lacking empathy.
• unwilling to change.
• not trying hard enough.

Over time, repeated misunderstandings can contribute to exclusion, discrimination and reduced opportunities.

The problem is not simply that autistic people may communicate differently.

The problem is that differences are often incorrectly interpreted as character flaws.

A more helpful question is:

"What might this behaviour mean from this person's perspective?"

rather than:

"Why are they behaving this way?"

Understanding intent is a crucial part of understanding autism.

Communication Requires Mutual Adaptation

A common approach to autism has been to focus primarily on teaching autistic people how to communicate in ways that are considered typical.

Learning different communication strategies can sometimes be helpful.

However, inclusion cannot be achieved if adaptation is expected from only one side.

If communication is genuinely a two-way process, then adaptation must also happen in both directions.

An autistic person may benefit from learning how to explain their communication preferences.

A neurotypical person may benefit from recognising that direct communication is not necessarily rude.

An autistic person may benefit from developing strategies to navigate unfamiliar social situations.

A neurotypical person may benefit from understanding that reduced eye contact, fewer facial expressions or less small talk do not necessarily indicate a lack of interest.

Both people contribute to successful communication.

The goal is not to make autistic people communicate "normally".

The goal is to create environments where different communication styles are understood and respected.

Rethinking Social Differences

Historically, autism has often been described using language such as:

• "poor social skills".
• "social deficits".
• "lack of social understanding".

While these terms appear within diagnostic frameworks, they can sometimes give an incomplete picture.

Many autistic people are highly interested in other people and value relationships deeply.

The difficulty may not be a lack of desire for connection.

Instead, it may relate to:

• uncertainty about social expectations.
• the effort required to interpret complex social information.
• previous experiences of being misunderstood.
• exhaustion from trying to navigate environments where communication rules are not explicit.

A person who appears quiet may not lack interest.

They may be carefully processing what has been said.

A person who avoids eye contact may not be disengaged.

They may find eye contact distracting, uncomfortable or require too much conscious effort, meaning that avoiding it actually allows them to listen more effectively.

A person who does not engage in conventional small talk may not be uninterested.

They may prefer communication that has a clear purpose or deeper meaning.

Understanding the experience behind the behaviour changes how we respond.

Instead of asking:

"Why doesn't this person communicate normally?"

a more helpful question is:

"How can we communicate in a way that allows both people to understand each other?"

That change in perspective is at the heart of genuine inclusion.

Behaviour Is Communication

One of the most important principles when supporting autistic people is:

Behaviour is communication.

This is particularly important when supporting autistic children, although it applies equally to adults.

When someone becomes overwhelmed, withdraws, refuses a demand or reacts strongly to a situation, it can be tempting to interpret this as:

• being difficult.
• being oppositional.
• refusing to cooperate.
• seeking attention.

However, behaviour usually serves a purpose.

It is often an attempt to communicate something when other forms of communication are unavailable or insufficient.

A child who refuses to enter a noisy classroom may not be refusing education.

They may be communicating:

"This environment is overwhelming and I do not know how to cope with it."

An adult who needs plans to remain predictable may not be trying to control others.

They may be communicating:

"Unexpected changes create a level of stress that is difficult for me to manage."

A person who becomes distressed by a change in routine may not be choosing to be inflexible.

They may be experiencing a genuine increase in uncertainty, cognitive load and stress.

The more we understand the reason behind behaviour, the more effectively we can provide support.

Understanding Changes Outcomes

A recurring theme throughout this Knowledge Hub is that understanding changes outcomes.

When we misunderstand behaviour, we often respond with criticism, pressure or attempts to force change.

When we understand the reason behind behaviour, we can respond with curiosity and support.

The question changes from:

"Why won't this person just do what everyone else does?"

to:

"What is making this difficult, and what could we change to help?"

That change in perspective can transform relationships.

It allows families, schools, employers and healthcare professionals to move from trying to correct differences towards supporting individuals to thrive.

Sensory Processing, Cognitive Load, Stress and Burnout

One of the most important aspects of understanding autism is recognising that autistic people may experience the world differently at a sensory level.

Many descriptions of autism focus primarily on communication and social interaction.

However, for many autistic people, sensory experiences and the way the brain processes information have a profound impact on everyday life.

The world around us is constantly providing information.

Every moment, our brains are receiving and processing signals from:

• sight.
• sound.
• touch.
• smell.
• taste.
• movement and balance.
• awareness of our body position.
• internal sensations such as hunger, tiredness, pain or emotion.

For most people, the brain automatically filters and prioritises this information.

It allows us to focus on what is important while ignoring information that is less relevant.

For many autistic people, this filtering process may work differently.

Information that other people automatically ignore may remain highly noticeable.

This can mean that everyday environments require much more conscious processing.

Sensory Differences

Sensory differences are a core part of many autistic people's experiences.

However, sensory processing differences are not simply about being "sensitive".

Autistic people may experience both hypersensitivity and hyposensitivity.

Hypersensitivity

Hypersensitivity means that sensory information may be experienced as unusually intense.

Examples may include:

• sounds feeling painfully loud.
• bright lights feeling overwhelming.
• certain textures of clothing feeling intolerable.
• strong smells becoming distracting or distressing.
• busy environments becoming exhausting.

These experiences are not a matter of preference.

For some autistic people, sensory input can genuinely feel physically uncomfortable or even painful.

Hyposensitivity

Some autistic people experience reduced sensitivity to certain sensory information.

This means they may need stronger or more intense input to notice something.

Examples may include:

• not noticing minor injuries.
• seeking movement or physical pressure.
• needing louder sounds or stronger sensory input to register information.
• finding movement helps them regulate attention and emotions.

Importantly, the same person may be hypersensitive in one area and hyposensitive in another.

Someone may find ordinary background noise overwhelming while also seeking intense physical activity.

Someone may dislike certain textures while actively seeking other sensory experiences.

There is no single autistic sensory profile.

Interoception: Understanding Internal Signals

An area that is often overlooked is interoception.

Interoception refers to the ability to recognise signals from inside the body.

These include sensations such as:

• hunger.
• thirst.
• tiredness.
• pain.
• temperature.
• emotional states.
• the need to use the toilet.

Some autistic people may have differences in interoception.

This may mean that they do not notice internal signals until they become very strong.

For example, someone may not recognise that they are becoming tired, stressed or overwhelmed until they reach a point where coping becomes much more difficult.

Understanding this is important because what may appear to others as a sudden reaction can actually be the result of many smaller difficulties building over time.

Cognitive Load

To understand many autistic experiences, it is helpful to understand the concept of cognitive load.

Cognitive load refers to the amount of mental effort required to process information, make decisions and complete tasks.

Everyone experiences cognitive load.

However, autistic people may experience increased cognitive load because they may need to consciously process things that others process automatically.

For example:

A neurotypical person may enter a busy room and automatically filter background conversations, lighting, movement and social information.

An autistic person may experience all of these inputs at the same time.

A neurotypical person may automatically understand an indirect comment.

An autistic person may need to consciously analyse what was meant.

A neurotypical person may adapt quickly when plans change.

An autistic person may need additional time to understand what has changed, why it has changed and what happens next.

None of these differences reflect a lack of ability.

They reflect differences in how information is processed.

However, the additional mental effort required can accumulate.

Stress and the Autistic Experience

A key principle in understanding autism is recognising the relationship between cognitive load and stress.

When demands repeatedly exceed the available capacity to process them, stress increases.

This may happen because of:

• sensory overload.
• uncertainty.
• social misunderstandings.
• masking.
• constant adaptation.
• changes in routine.
• environments that do not recognise individual needs.

Importantly, stress is not simply an emotional reaction.

Stress has real effects on the brain and body.

When someone is constantly required to use significant mental energy simply to manage everyday experiences, there may be fewer resources available for:

• learning.
• problem-solving.
• relationships.
• emotional regulation.
• self-care.

This helps explain why someone may cope well in one situation but struggle significantly in another.

The issue is often not a lack of ability.

It is the amount of stress and cognitive load present at that particular time.

The Cumulative Effect: Autistic Burnout

For some autistic people, years of managing excessive demands can lead to autistic burnout.

Autistic burnout is not simply feeling tired.

It is a state of significant exhaustion that may occur after prolonged periods of coping with demands that exceed available capacity.

It may involve:

• extreme fatigue.
• reduced ability to manage everyday tasks.
• increased sensory sensitivity.
• reduced tolerance for uncertainty.
• difficulty communicating.
• loss of previously developed coping strategies.

Many autistic adults describe burnout after years of trying to meet expectations that did not take their needs into account.

This is one reason why understanding and appropriate adjustments are so important.

The solution is not always to encourage someone to try harder.

Sometimes the solution is to reduce unnecessary demands and remove barriers.

Reducing Cognitive Load and Stress

One of the most positive aspects of understanding autism is recognising that relatively small changes can have a significant impact.

Reducing uncertainty can help.

Providing clear information can help.

Allowing processing time can help.

Adjusting sensory environments can help.

Recognising individual communication preferences can help.

These adjustments are not about giving someone an advantage.

They are about removing unnecessary barriers.

When cognitive load and stress are reduced, many autistic people are better able to access their strengths.

They may become more able to:

• learn.
• communicate.
• participate.
• build relationships.
• contribute their skills and perspectives.

The goal is not to change the person.

The goal is to create conditions in which the person can function at their best.

Understanding Before Judgement

Many behaviours associated with autism make much more sense when viewed through this lens.

A person who becomes distressed in a noisy environment may not be overreacting.

They may be experiencing genuine sensory overload.

A person who needs advance notice of changes may not be inflexible.

They may be trying to manage uncertainty and reduce stress.

A person who needs time alone after social interaction may not dislike people.

They may be recovering from significant cognitive and sensory demands.

When we understand the experiences behind behaviour, our responses change.

Instead of asking:

"Why is this person struggling with something that seems easy?"

we can ask:

"What demands are they managing that I cannot see?"

That question is often the beginning of meaningful support.

Autism and Mental Health

Autism is not a mental health condition.

It is a lifelong neurodevelopmental difference that affects the way a person experiences, processes and interacts with the world.

However, autistic people experience higher rates of mental health difficulties than the general population.

These include:

• anxiety.
• depression.
• chronic stress.
• low self-esteem.
• exhaustion.
• difficulties with emotional regulation.

Understanding why these difficulties occur is essential.

If we simply observe that autistic people experience more mental health difficulties, it is easy to reach the wrong conclusion.

The problem is not that autistic people are inherently less able to cope.

The problem is often the cumulative impact of living in environments that may not recognise, understand or accommodate their needs.

The Impact of Being Misunderstood

Many autistic people spend years being misunderstood.

From childhood onwards, they may receive messages that they are:

• too sensitive.
• too difficult.
• not trying hard enough.
• overreacting.
• lacking social awareness.
• being deliberately challenging.

However, many behaviours that are interpreted negatively are actually attempts to manage genuine difficulties.

A child who struggles with a noisy classroom may be described as disruptive.

An adult who needs clear expectations may be described as inflexible.

A person who finds social situations exhausting may be described as unfriendly.

Over time, repeated experiences of being misunderstood can affect how someone views themselves.

They may begin to internalise the belief that the problem is who they are, rather than recognising that they have been trying to function in environments that do not fit their needs.

Chronic Stress and Mental Health

As discussed earlier, many autistic people experience increased cognitive load.

Sensory demands, uncertainty, social interpretation, masking and constant adaptation can all require significant mental energy.

When this happens repeatedly over long periods, stress can become chronic.

Chronic stress can affect:

• emotional wellbeing.
• sleep.
• concentration.
• motivation.
• relationships.
• ability to manage everyday demands.

This helps explain why some autistic people experience periods where their ability to cope appears to suddenly decline.

Often, this is not because they have become less capable.

It is because the demands placed upon them have exceeded their available capacity for too long.

A useful question is not:

"Why can this person no longer cope?"

but:

"What has changed, and what pressures may have accumulated over time?"

Masking and Mental Health

Masking deserves particular attention because it can have a significant impact on wellbeing.

Many autistic people learn to hide or suppress aspects of themselves in order to fit into environments designed around neurotypical expectations.

They may consciously monitor:

• their facial expressions.
• their eye contact.
• their tone of voice.
• their body language.
• their conversational style.
• their responses to social situations.

This adaptation can sometimes be helpful.

However, maintaining this level of self-monitoring requires considerable energy.

Over time, masking may contribute to:

• exhaustion.
• anxiety.
• loss of confidence.
• feeling disconnected from one's authentic self.
• autistic burnout.

This does not mean that autistic people should never adapt.

Everyone adapts to different situations.

The important distinction is whether adaptation is a choice that helps someone achieve their goals, or whether it becomes a constant requirement simply to be accepted.

The Importance of Self-Understanding

One of the most powerful benefits of diagnosis for many autistic people is not the label itself.

It is the understanding that comes with it.

For some people, diagnosis explains a lifetime of experiences that previously felt confusing or contradictory.

It can provide answers to questions such as:

• Why have some situations always felt much harder than expected?
• Why do I become exhausted after experiences that seem easy for others?
• Why have I always felt different?
• Why have certain environments caused so much stress?

For many autistic adults diagnosed later in life, this understanding can be transformative.

Diagnosis as an Explanation, Not an Excuse

A diagnosis does not remove responsibility.

It does not mean that difficulties cannot be addressed.

It does not mean that growth and learning are impossible.

Instead, diagnosis provides an explanation.

It allows people, families and professionals to understand why certain things may be difficult and what changes are likely to help.

A diagnosis is:

An explanation, not an excuse.

It is the beginning of understanding.

And understanding creates the possibility of meaningful change.

Improving Mental Health Through Understanding

Improving mental health for autistic people is not simply about treating anxiety or depression after they develop.

It is also about preventing unnecessary stress.

This involves:

• understanding individual needs.
• reducing avoidable uncertainty.
• making reasonable adjustments.
• respecting different communication styles.
• recognising strengths.
• creating environments where people do not have to constantly fight against how their brain naturally works.

When autistic people are understood and supported, they are more able to use their energy for the things that matter:

• relationships.
• learning.
• creativity.
• work.
• personal goals.
• enjoying life.

The aim is not to make autistic people less autistic.

The aim is to reduce unnecessary barriers so that autistic people can thrive.

Autism, Health and Life Expectancy

An important but often overlooked aspect of understanding autism is recognising that autistic people experience significant health inequalities.

Research has identified that autistic people, on average, have a reduced life expectancy compared with the general population.

The reasons for this difference are complex and are almost certainly multifactorial.

They are unlikely to be explained by autism itself, but rather by the interaction between autistic people and the environments in which they live.

Possible contributing factors include:

• difficulties accessing healthcare that recognises and accommodates autistic needs.
• delayed recognition and treatment of physical and mental health problems.
• increased rates of some co-occurring medical conditions.
• higher rates of anxiety, depression and other mental health difficulties.
• social isolation and reduced social support.
• the cumulative impact of chronic stress, cognitive load and unmet support needs.

It is important to understand that these findings do not mean that being autistic is inherently harmful.

Rather, they highlight the importance of understanding the challenges that can arise when autistic people are required to constantly navigate environments that do not recognise or accommodate their needs.

As discussed throughout this article, many autistic people experience increased cognitive load because they may need to consciously manage things that others process automatically.

Sensory differences, uncertainty, social misunderstandings, masking and constant adaptation can all contribute to increased stress.

Over many years, this accumulation of stress may have consequences for both mental and physical wellbeing.

Although stress is not the only factor contributing to health inequalities in autistic people, reducing unnecessary stress must be considered an essential part of improving outcomes.

This means creating environments where autistic people are:

• understood rather than judged.
• supported rather than expected simply to cope.
• able to communicate their needs.
• able to access healthcare in ways that work for them.
• able to use their energy for meaningful activities rather than constantly managing avoidable barriers.

Improving health outcomes for autistic people is not simply about identifying autism.

It is about creating the conditions in which autistic people can live healthier, more fulfilling lives.

The goal is not to remove autistic differences.

The goal is to ensure that autistic people are supported to thrive.

From Diagnosis to Understanding: The Importance of Individual Formulation

A diagnosis of autism can be life-changing.

For many people, it provides an explanation for experiences that may have been confusing, frustrating or painful for many years.

It can help people understand:

• why certain situations have always felt difficult.
• why they may experience the world differently from those around them.
• why particular environments create stress.
• why certain strategies and adjustments help.

However, diagnosis is only the beginning of the process.

A diagnosis tells us that a person meets recognised criteria for autism.

It does not, by itself, tell us everything we need to know about that individual.

It does not tell us:

• what their greatest strengths are.
• what situations they find most difficult.
• what causes them stress.
• what support will be most helpful.
• what adjustments will improve their quality of life.

This is why understanding the individual is just as important as recognising the diagnosis.

Diagnosis Is Not a Complete Explanation

It is tempting to assume that once someone has received an autism diagnosis, we understand the reason for all of their difficulties.

However, this is rarely the case.

Autism may explain some experiences, but not every challenge a person faces.

Every autistic person has their own combination of:

• strengths.
• interests.
• personality.
• life experiences.
• coping strategies.
• challenges.
• environmental demands.

Two people may both be autistic but have completely different experiences.

For example:

One autistic person may find social situations exhausting but cope well with unexpected changes.

Another may enjoy social interaction but experience significant distress when routines are disrupted.

One person may be highly sensitive to sound but seek significant movement and physical activity.

Another may have completely different sensory experiences.

The diagnosis is the same.

The person is not.

The Importance of Formulation

In healthcare, education and psychology, the process of understanding how a person's individual characteristics interact with their experiences is often called formulation.

A formulation asks questions such as:

• What strengths does this person have?
• What situations create difficulty?
• What causes stress?
• What helps them regulate?
• What environmental changes would improve functioning?
• What support would allow them to use their abilities more effectively?

Rather than asking only:

"Does this person have autism?"

formulation asks:

"How does autism affect this particular person?"

This is a much more useful question.

Identifying Difficulties Rather Than Assuming Them

One of the risks of diagnosis is that it can sometimes become a shortcut explanation.

For example:

A child struggles at school.

The explanation becomes:

"They are autistic."

An adult experiences anxiety.

The explanation becomes:

"That is because they have autism."

While autism may be relevant, this approach can be too simplistic.

The important question is not whether autism is present.

The important question is:

"What specific difficulties is this person experiencing, and what changes will help?"

For one person, the key issue may be sensory overload.

For another, it may be uncertainty.

For another, it may be communication difficulties, executive functioning demands or previous experiences of being misunderstood.

Support should be based on the individual's actual needs, not simply on the diagnostic label.

Strengths-Based Understanding

Individual formulation is not only about identifying difficulties.

It is equally important to understand strengths.

Many autistic people have significant strengths, which may include:

• attention to detail.
• deep knowledge and expertise in areas of interest.
• creativity.
• honesty.
• persistence.
• ability to recognise patterns.
• strong values and commitment.
• alternative ways of solving problems.

However, strengths are not automatically accessible in every environment.

A person may have exceptional abilities but struggle to demonstrate them when they are overwhelmed, exhausted or experiencing excessive cognitive load.

This is why creating supportive environments is so important.

The aim is not simply to identify what someone cannot do.

The aim is to understand the conditions in which they can thrive.

The Purpose of Diagnosis

A diagnosis should never become a limitation.

It should become a tool for understanding.

The most useful outcome of diagnosis is not simply being able to say:

"This person is autistic."

The most useful outcome is being able to understand:

"This is how this person's brain works, these are the things that create difficulty, these are their strengths, and these are the changes that will help them live well."

A diagnosis is an explanation, not an excuse.

It does not remove responsibility.

It does not mean challenges cannot be addressed.

It provides the information needed to make meaningful change possible.

Diagnosis is the starting point.

Understanding the person is the goal.