Find a psychiatrist


About autism

Autism is a lifelong developmental condition. It is also called Autism Spectrum Disorder (ASD). It takes in a wide range of different levels of ability and includes what was previously called Asperger’s syndrome.

A person with autism has problems with:

  • communication (talking, understanding instructions and body language, making eye contact)
  • repetitive behaviour (hand flapping, repeating words, playing with the same toys)
  • sensory issues (avoiding certain textures, sounds or lights, or seeking them out)

About 1 in 100 Australians and New Zealanders have autism. It’s about four times more commonly diagnosed in boys than in girls.

There is a huge variation in the way that autism affects a person’s life, from social and relationship issues to daily activities, school and work.

Causes of autism

The causes of autism are unknown. Current research suggests that genes and the way the brain develops play a part.

There is nothing a parent does that can cause autism. Vaccinations do not cause autism.

Signs and symptom­­s 

Symptoms usually appear in early childhood.

In a child you might notice:

  • a lack of interest in other children
  • not saying any words by age 2
  • not making eye contact with you
  • not showing you things they find, not pointing or waving goodbye
  • repetitive play
  • intense, narrow interests (spinning wheels of toys, opening and closing doors)
  • seeking out sensations (licking toys or playground equipment, for example)
  • avoiding sensations (tantrums in bright, noisy places)
  • tantrums or discomfort when a routine changes
  • hand flapping, walking on tip-toe or rocking back and forth.

If you are concerned about your child, talk to your GP (family doctor) or paediatrician.

In an adult you might notice:

  • difficulty joining conversations and knowing what to say in social situations
  • effort or anxiety in working out what others mean when they are talking
  • trouble making friends
  • trouble forming or keeping relationships
  • intense interest in particular subjects
  • anxiety or depression.

If you have symptoms that are affecting your daily life, it’s important to seek help.

Getting help

As a first step, see your GP.

A GP can assess your symptoms and write you a referral to a psychiatrist, paediatrician or multi-disciplinary team.

Childcare workers, teachers and community health workers may also be able to help you. Some can also make referrals.

First steps to get help

Autism diagnosis

In Australia, autism is diagnosed by a multidisciplinary team, child psychiatrist or paediatrician. 

In New Zealand, autism is usually diagnosed by a paediatrician or Child, Adolescent & Family Mental Health Service.

Multidisciplinary team

A team of health professionals involved in autism diagnosis may include:

  • paediatrician 
  • child psychiatrist
  • clinical psychologist
  • speech therapist 
  • occupational therapist.


Assessment for autism can involve three or four appointments over a few weeks. Your child's cognition (thinking skills), communication, physical health, home life and school or kindergarten will be carefully reviewed.

Diagnosis in adults

Generally adults are diagnosed through discussion and assessment with either a psychiatrist or clinical psychologist.

Why get a diagnosis?

In children, a diagnosis will:

  • allow you to get help with their speech, learning and socialising
  • open up a range of government and community services to help you and your child
  • allow your child’s school to receive government funding
  • help you to understand and learn about your child’s behaviour.

For adults a diagnosis may be useful for:

  • getting a better understanding of any difficulties you have
  • learning useful ways to cope
  • finding a community of people who are going through the same thing
  • getting proper treatment for any mental health issues.

Autistic people can also have intellectual disability, fragile X syndrome, ADHD, or gastrointestinal issues. 

In adulthood, mental illnesses such as depression, anxiety and bipolar disorder can be common.

Living well as an autistic person

Autism can’t be cured. Language skills, socialising and the ability to perform daily tasks can be improved in all children with autism.

Early intervention programs

Early intervention programs help children with speech, learning daily tasks and playing with others.

Around 30 hours per week of specialist therapy is recommended.

This could be with:

  • a therapist at a specialist centre your child visits daily
  • a therapist who comes to your home
  • a support worker at a regular kindergarten or school. 

Intervention programs work best when they are started as early as possible (ideally before preschool age).


In rare cases, a psychiatrist might prescribe medication to help with extreme self-harm or aggression.

Medication may also be recommended for depression or anxiety.

Psychiatrist's role in autism

Psychiatrists can:

  • make a diagnosis of autism alongside a team of other health professionals
  • diagnose and treat ADHD, depression, anxiety or bipolar disorder
  • prescribe medication if required
  • provide referrals to speech therapists, neurologists, paediatricians, occupational therapists and psychologists
  • connect you to community services
  • provide medical reports for other doctors, schools or workplaces.​

Find a psychiatrist near you who specialises in diagnosing autism

Support for autistic people

Help with daily activities

Autistic people may benefit from:

  • learning about autism and teaching others about their diagnosis
  • having clear rules for social interactions (if someone says ‘hello’ say ‘hello’ back)
  • visual aids (e.g. a drawing of what they should to do)
  • a familiar environment
  • reducing sensory overload
  • good daily routines
  • lots of socialising and play
  • opportunities to develop things they are good at
  • support for parents, siblings, grandparents, spouses and children.


There are play and parenting groups for the families and whānau of autistic children.


New Zealand

Other therapies

You may come across many products, services and therapies that claim to help autism.

Not all therapies have evidence to show that they benefit the person with autism. Some are expensive.

The Raising Children Network explains many of these therapies in detail.

Helping yourself

  • Identify what you’re good at, and build on your skills.
  • Learn new coping strategies and use them when you feel overwhelmed.
  • Ask for help when you need it.
  • Try to socialise whenever you can.
  • Get regular check-ups of your physical and mental health.
  • Join a support group in-person or online.
  • Be aware of the signs of anxiety and depression.

Helping someone with autism

  • Take care of your own needs first.
  • Learn about autism and the best ways to help the person you are looking after.
  • Encourage socialising as much as you can.
  • Make appointments for regular check-ups of physical and mental health.
  • Talk to other parents and families about their experiences.
  • Be aware of your rights to funding, support and advocacy.
  • Take time out if you need it.

More on caring for someone with a mental illness

More information

Funding and support options for children with autism


  • Autism is a lifelong condition with a great variation in a person’s skills and abilities.
  • All children with autism can benefit from early help with speech and socialising.
  • Diagnosis can be beneficial for all age groups.
  • Psychiatrists can diagnose autism and any related mental health conditions.
Page last reviewed Apr 2021 | C1022V1

This is a general guide only, and does not replace individual medical advice. Please speak to your doctor for advice about your situation. The RANZCP is not liable for any consequences arising from relying on this information. Subject matter experts, people with lived experience of mental illness and carers all contributed to this fact sheet.