By Clinical Partners on Friday, 25 April 2025
Category: Autism

What are the different signs of autism in adults?

Autism is usually expected to be diagnosed in childhood. However, many people are not diagnosed with autism until later in life, especially as we learn more about characteristics and how they present themselves.

Autism can be characterised by a range of signs and experiences. While not all characteristics may point to an autism diagnosis, there are a range of signs that may align with autistic adults.

By finding out more about how autism can affect adults, you can better understand yourself, or the needs of someone close to you.

Table of contents


The common signs of autism in adults

Autistic adults experience and interact with the world in unique ways. While everyone is different, there are some common characteristics that many share.

These traits persist throughout life; however, they can vary and change depending on a person's environment and support network. They can vary widely in how they manifest from person to person. Below are some areas where autistic adults might differ from neurotypical individuals:

Social interaction

Many autistic adults can find social interaction challenging. This can include difficulties in building and maintaining friendships, working in teams, or social situations.

Some may experience:

As autism is a lifelong condition, experiences such as these will exist across the lifespan. Though some adults may develop strategies and techniques to disguise some of these difficulties, which mean they may not appear to be outwardly struggling. However, the cost of using such strategies is often high and can lead to autistic burnout.

Autistic burnout shows itself in intense physical, mental, and emotional exhaustion resulting from ongoing stress and the continuous effort to cope with a world that may not accommodate autistic needs. It manifests as a loss of interests, executive functioning problems, and low mood.

Restrictive and repetitive behaviours and interests

As with children, to meet the criteria for an autism diagnosis, adults must display what is known as restrictive and repetitive behaviours and/or interests. This may include:

These behaviours and preferences are often key to the well-being and happiness of autistic adults.

Sensory sensitivity

Many autistic adults experience differences in how they process sensory information. This can lead to heightened or reduced sensitivity to touch, light, sound, and other sensory stimuli.

Common experiences include:

These sensory sensitivities are an integral part of being autistic and can significantly impact daily life.

Read our full resource on the signs of autism.

Other signs of autism in adults

Autistic adults may also experience a range of other characteristics that shape how they interact with the world. These signs vary widely from person to person.

Eye contact

Many autistic adults are more comfortable avoiding eye contact during conversations. This isn’t a sign of disinterest or avoidance. It is a preference that helps manage sensory input and maintain focus during interactions.

Personal space and touch

Some autistic people might feel uncomfortable when others are in their personal space. Furthermore, they may not always realise when they are standing too close to someone else.

Navigating social “rules”

Some autistic adults might find it challenging to pick up on unwritten social “rules”. This may include understanding the nuances between how you might speak to a friend verses a work colleague.

Preference for planning

Autistic adults might prefer to plan things rigorously before doing them. Planning helps create predictability and reduces anxiety in an often-unpredictable world.

Heightened awareness of details

Autistic adults typically notice small details, patterns, smells, or sounds that others might overlook.

How autism may affect your work life

Autism can influence how a person experiences their work environment. For many autistic adults, work provides an opportunity to apply their unique strengths and perspectives.

However, the workplace can also present challenges. This may be in areas like communication, social interactions, and sensory processing.

Strengths in the workplace

Autistic adults often bring valuable skills to their work, such as:

Challenges in the workplace

While autistic adults have many strengths, they may also encounter challenges at work, such as:

How can employers best support autistic employees?

Employers can play a crucial role in creating an inclusive and supportive work environment by:

Helping autistic adults

Autism in adults is something that should be understood and supported in ways that enhance quality of life and well-being. Treatment and support strategies focus on addressing individual needs, helping to manage challenges, and leveraging strengths.

Support and therapy

Cognitive Behavioural Therapy (CBT) can help autistic adults manage anxiety, depression, and other mental health challenges. CBT can provide strategies for dealing with stress, improving social interactions, and general daily life.

Individual or group counselling may also be offered. This can provide a space to explore personal experiences, develop coping strategies, and receive support for emotional well-being.

Other methods

Below are some other methods that are often used to help autistic people feel more comfortable in their day-to-day life:

Next steps towards an autism diagnosis

Learn about autism and discuss assessment options by taking the first step.

Contact us now at 0203 326 9160.

As the UK’s largest private mental health partnership, we're dedicated to supporting children, adults, families, and organisations nationwide. Let's start your journey towards clarity and support today.

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