Topic

Autism

A structured guide to understanding autism in adulthood, from recognising autistic traits and seeking an assessment through to sensory needs, everyday life, work, wellbeing and ongoing support.

Autism is a lifelong neurodevelopmental difference. It affects how a person experiences and processes the world, including communication, social interaction, sensory information, attention, learning and patterns of thinking.

Autism is described as a spectrum because autistic people can have very different traits, strengths, difficulties and support needs. Being on a spectrum does not mean that someone is simply “more” or “less” autistic. Different aspects of autism can affect each person in different ways and in different situations.

Some autistic people may need substantial support throughout their lives, while others may live independently and need support only in particular environments or circumstances. A person's needs can also change over time.

Autism is not an illness that needs to be cured. The NHS describes it as a difference in how the brain develops and how someone sees and experiences the world. Autism is present from birth, although a person may not recognise that they are autistic or receive a diagnosis until adulthood. nhs.uk

Autistic differences can include communication and social interaction, preference for routine or predictability, focused interests, repetitive movements or behaviours, and differences in sensitivity to sound, light, touch, taste, smell and other sensory information. However, no autistic person will experience all of these in exactly the same way. nhs.uk

Autism can also occur alongside other conditions. ADHD, anxiety, depression, epilepsy and learning disabilities are among the conditions that may occur more commonly in autistic people. Autism itself, however, is distinct from these conditions. nhs.uk

For adults, understanding autism is therefore less about matching a single stereotype and more about recognising a consistent pattern of differences across a person's development and everyday life.

Sources & further reading

Explore the original sources.

Official guidanceNHS

What is autism?

NHS overview explaining autism as a difference in how the brain develops, including how it can affect communication, thinking, learning, sensory processing and everyday experience.

Evidence note

NHS patient information providing an accessible overview of autism, including neurodevelopment, communication, sensory differences, co-occurring conditions and support.

Clinical guidanceClinical guidelineNICE

Autism spectrum disorder in adults: diagnosis and management (CG142)

NICE clinical guidance covering the identification, assessment, diagnosis, support and management of autism in adults, including communication, sensory needs, coexisting conditions and access to appropriate services.

Evidence note

NICE clinical guideline for adults aged 18 and over with suspected or confirmed autism. It covers identification and comprehensive assessment, interventions, coexisting mental health conditions, behaviour that challenges, support for families and carers, and how services should be organised. It also recognises sensory sensitivities, difficulties with flexibility and emotional regulation as common features that may need to be considered in assessment and support.

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