Level 1 autism is the lowest of the three support levels in an autism diagnosis, described as “requiring support”. A person at this level still needs support, and what that support looks like differs from person to person.
This guide explains what this level means, how it shows up in children, adults and women, how it differs from level 2, and what support exists. It sits within our guide to the different levels of autism.
The term describes the amount of support an autistic person needs, as set out in the diagnostic manual clinicians use. A diagnosis gives a level for each area rather than a single score.
For children, the Raising Children Network lists level 1 as “children need support”, level 2 as “substantial support” and level 3 as “very substantial support” (Raising Children Network).
Signs differ from person to person, and the Autism Association of Australia says people at level 1 may have difficulties with social interactions and need help with organisation or planning (Autism Association of Australia). This list is for reflection only, and only a qualified professional can assess this.
These points describe areas where adults at this level may need support. They are not a checklist.
Our guide to symptoms of mild autism looks at what people mean by “mild” autism.
TQN Care support workers help with personal care, community access, respite and help around the home across Sydney, Melbourne and surrounding areas (NSW & VIC). Tell us what you need and we will call you back.
Make a referral →The support level descriptions are the same for women and girls as for everyone else. An adult woman who thinks she may be autistic can talk to her GP about an assessment.
The difference between level 1 and 2 autism is the amount of support needed. Our level 2 autism guide and level 3 autism guide go into detail.
To compare other labels you may see on reports, read about the types of autism and PDA autism.
A level is given as part of a formal autism assessment by qualified professionals, not from an online quiz. Online checklists can prompt you to seek an assessment, but they cannot tell you whether you are autistic.
This is a hard topic, and the facts matter. An Autism CRC study (February 2019) of autistic people in NSW, aged 5 to 64 between 2001 and 2015, found autistic people had double the comparative mortality rate of the general population (Autism CRC).
Access to the NDIS depends on meeting its requirements. The NDIS guideline says evidence of a List A diagnosis means the NDIA will likely decide you meet the disability requirements, while List B includes pervasive developmental disorders not meeting severity criteria in List A (NDIS guideline, 26 August 2026).
Seeing a GP is a sensible step if any of these sound familiar. You do not need to wait for a crisis, and in an emergency, call 000.
You can also call Autism Connect on 1300 308 699, a free national helpline delivered by Amaze, open 8am to 7pm Monday to Friday (Amaze).
TQN Care support workers help with personal care, community access, respite and help around the home across Sydney, Melbourne and surrounding areas (NSW & VIC). Tell us what you need and we will call you back.
Make a referral →If you or someone you care for is autistic with level 1 support needs and could use practical help at home or in the community, we can talk it through. TQN Care offers personal care, community access, respite and help around the home as part of our NDIS services. Tell us what you need and a member of our team will call you back to discuss options.
Level 1 autism is the lowest support level in a DSM-5-TR autism diagnosis, described as requiring support. It means a person may have difficulty with social interaction and need help with organisation or planning, but the details differ for everyone.
It can look like difficulty starting conversations, strong reactions to sensory input, discomfort with change and trouble with planning. Some people hide these traits well in public. Only a qualified professional can assess whether someone is autistic.
Living arrangements differ for every autistic person with level 1 support needs, and help with organisation, health and money management can be part of planning for independence. What suits you depends on your circumstances, so discuss goals with your GP, assessor or a support coordinator.
Support levels can change over time, so a later assessment may give a different level. That does not mean autism goes away. Ask your clinician how any change affects the supports you need.