What is fetal alcohol spectrum disorder (FASD)?

• FASD (fetal alcohol spectrum disorder) is a lifelong, brain-based disorder caused by alcohol reaching a baby during pregnancy.
• It affects roughly one child in every Australian classroom.
• Most people living with FASD have no visible physical signs, which means it's frequently missed or mistaken for ADHD, autism, or another condition.
• Diagnosis follows the 2025 NHMRC-approved Australian Guidelines through a multidisciplinary assessment.
• Early, strengths-based support makes a genuine difference to life outcomes.

If you're already looking into assessment, Scope's FASD assessment page explains the full process.

If someone has mentioned FASD in connection with your child, a family member, or yourself, you're probably trying to work out what that actually means. You might have come across the term in a school report, heard it from a GP, or stumbled on it late at night while searching for answers to something you've noticed for years.

That's a lot to sit with, and not much of what you've found so far probably explains it plainly.

We'll take it one piece at a time: what FASD is, what causes it, how it's diagnosed in Australia, and what support looks like across the lifespan. Plain language, current evidence, and no jargon without explanation. Start wherever makes sense for you.

What is FASD?

Fetal alcohol spectrum disorder (FASD) is a lifelong neurodevelopmental condition caused by prenatal alcohol exposure. When alcohol reaches a developing baby during pregnancy, it can disrupt the way the brain grows and wires itself. The effects are permanent, but with the right support, people living with FASD experience full, meaningful lives.

How the terminology has changed

The language around FASD has shifted significantly over the past few decades. If you've come across different terms and aren't sure which one applies, you're not alone.

From FAS to FASD

FASD is an umbrella term. It replaced the older, narrower label "Fetal Alcohol Syndrome" (FAS), which described only the most visually recognisable presentation: characteristic facial features, growth problems, and brain dysfunction. Research made clear over time that the large majority of people affected by prenatal alcohol exposure don't have those facial features at all. "FASD" was adopted to capture the full spectrum of effects, from people with visible physical markers through to those whose challenges are entirely cognitive and behavioural.

Where ND-PAE fits in

In the DSM-5-TR (the diagnostic manual used by psychologists and psychiatrists), the American Psychiatric Association introduced the term Neurobehavioral Disorder Associated with Prenatal Alcohol Exposure (ND-PAE). It focuses on three areas where symptoms occur: neurocognition, self-regulation, and adaptive functioning. ND-PAE currently sits in the DSM-5-TR's "Conditions for Further Study" section. Australia's 2025 Guidelines retain "FASD" as the primary diagnostic term while acknowledging alternative terminology, including "neurodevelopmental disorder associated with prenatal alcohol exposure," to respect individual and family preferences.

The term you use to describe your experience matters, and you'll see different language across different settings. But the most important thing to understand is that FASD is a brain-based condition, not a behavioural problem, not a parenting failure, and not something a person can simply 'try harder' to overcome.

What causes FASD?

Fetal alcohol spectrum disorder is caused by a developing baby being exposed to alcohol during pregnancy. Alcohol is a teratogen (a substance that can interfere with normal development), and it crosses the placenta freely.

This needs to be said with compassion, because it's easy to read the cause and feel guilt or blame. Many pregnancies are unplanned. Exposure often happens before a person knows they're pregnant. No parent sets out to cause harm. Understanding the cause is about prevention and clarity, not finger-pointing.

Does timing matter?

Alcohol can cause harm at any point during pregnancy, because the brain doesn't stop developing. It grows across all three trimesters, and each stage brings different risks.

In the first trimester, major organs and facial structures form. The three characteristic facial features linked to FASD (more on these below) develop when alcohol exposure occurs during a narrow window around weeks six to nine. In the second trimester, alcohol continues to affect brain structure and function as neural pathways develop. And in the third trimester, the brain grows and wires rapidly. Exposure during this period can affect areas involved in memory and judgement, and can restrict physical growth.

There is no safe trimester, no safe amount, and no safe type of alcohol. The NHMRC's Australian Guidelines to Reduce Health Risks from Drinking Alcohol (2020) are unambiguous. Women who are pregnant or planning a pregnancy should not drink alcohol. The 2025 FASD Guidelines reinforce this, stating that "no safe level of alcohol consumption during pregnancy has been identified."

If you're pregnant and have consumed alcohol at any point, that doesn't automatically mean your baby's brain has been affected. What it does mean is that it's worth raising with your midwife, GP, or obstetrician. They can talk through what happened, plan for the rest of your pregnancy, and make sure you and your baby get the right support before and after birth.

How common is FASD in Australia?

Most people are surprised by how common fetal alcohol spectrum disorder actually is. Globally, Popova and colleagues estimated FASD prevalence at 7.7 per 1,000 population (Lancet Global Health, 2017), with Europe recording the highest regional rate at 19.8 per 1,000. It's one of the most common preventable causes of neurodevelopmental disability worldwide.

Australia's figures are higher than many people expect.

The first national general-population estimate, published by Tsang, Rosenblatt, Parta and Elliott in Drug and Alcohol Review (2025), put FASD prevalence at 3.64% (95% CI 2.91–4.41%). That equates to roughly 36 cases per 1,000 children, or approximately 10,331 children born with FASD in 2023 alone. Put another way: roughly one child in every Australian classroom.

That figure is substantially higher than earlier estimates. The 2025 study represents the best available national estimate, though the authors note it's a modelled figure (combining Australian prenatal-alcohol-exposure data with an international risk equation) rather than a direct headcount.

Why is FASD under-diagnosed?

Despite how common it is, FASD remains widely under-diagnosed in Australia. The majority of people with FASD have no visible physical signs, so the condition doesn't 'look like' anything obvious. Stigma around alcohol use in pregnancy makes it harder for clinicians to ask and harder for families to disclose, though it's worth knowing that questions about alcohol are now a routine part of antenatal care in Australia. If your midwife or doctor raises it, it's not because of anything specific to you. It's a question asked of everyone, and it's there so you and your baby can get the right support. Diagnostic capacity is also limited: there simply aren't enough trained clinicians conducting FASD assessments nationally.

The gap between actual prevalence and identified cases is starkly illustrated in justice settings. A landmark study at Banksia Hill youth detention centre in Western Australia (Bower et al., BMJ Open, 2018) assessed 99 young people. Of those, 36 (36%) met diagnostic criteria for FASD. Only two had been identified beforehand.

Signs and symptoms of FASD across the lifespan

FASD presents differently in every individual. Clinicians sometimes say "if you know one person with FASD, you know one person with FASD." The effects also shift as a person grows, which is one of the reasons the condition can go unrecognised for years. The descriptions below are common patterns, not a checklist. Your experience may look different.

What FASD looks like at different ages

The way FASD shows up changes as a person grows. What's noticeable in a toddler looks different in a teenager, and different again in an adult. That shifting presentation is one of the reasons it can get missed for so long.

Infancy and early childhood

Signs may include growth problems, feeding and sleep difficulties, developmental delays affecting speech and motor milestones..

School-age children

FASD symptoms often become more apparent once a child starts school. Difficulty sustaining attention, hyperactivity, impulsivity, and learning difficulties (particularly with maths) are common. Children may struggle to transfer learning from one context to another, understanding a rule in the classroom but unable to apply it on the playground. They often need repeated reminders for everyday tasks that other children the same age manage independently.

Adolescence

The gap between the person and their age peers tends to widen. Social difficulties, challenges regulating emotions, vulnerability to negative peer influence, and difficulty predicting the consequences of actions all become more pronounced.

Adulthood

Challenges often centre on independent living, maintaining employment, managing mental health, and dealing with complex systems. Without the right support, there is a higher risk of contact with the justice system. That risk isn't about any inherent tendency toward criminal behaviour. It comes from the mismatch between how the person presents (often articulate and socially capable) and their actual capacity for reasoning, impulse control, and understanding consequences. Others automatically deliver less support than is actually needed because of strong social capabilities.

The "FASD face":Characteristic facial features

Three physical features are associated with FASD: short palpebral fissures (narrower eye openings), a smooth philtrum (the groove between the nose and upper lip), and a thin upper lip. These are more likely to develop when alcohol exposure occurs during early pregnancy; roughly weeks six to nine.

Here's what matters most: these features are present in only a minority of people with FASD. International sources (including a 2025 review in the British Journal of General Practice) put the figure at around 10%, while FASD Hub Australia and the American Academy of Pediatrics cite closer to 20%. Either way, FASD is largely an "invisible" disability. Their absence never rules FASD out. Their presence doesn't mean a person is more severely affected.

The spiky profile

People with FASD often have what clinicians call a "spiky profile": genuine strengths in some areas alongside significant challenges in others. Verbal expression, sociability, creativity, and kindness are commonly noted strengths. Executive function, abstract reasoning, memory, and impulse control are common areas of difficulty.

This uneven profile creates a specific trap. Because someone with FASD can be articulate and socially engaging, the people around them overestimate their capacity. Surface verbal fluency masks real difficulties with comprehension, planning, and follow-through. The result is frustration on all sides, and it's one of the strongest reasons why an accurate diagnosis matters. Once everyone around a person understands the full picture, the support can finally match the need.

How is FASD diagnosed?

If you're wondering what a fetal alcohol spectrum disorder assessment actually involves, Australia now has a clear, nationally endorsed process. Diagnosis is guided by the Australian Guidelines for the Assessment and Diagnosis of FASD, released in May 2025 and approved by the NHMRC. These replace the earlier 2016 Guide (updated 2020) and represent the most current framework for FASD assessment in this country.

Who conducts the assessment?

A FASD diagnosis isn't a single test, and that's a good thing. It draws on multiple disciplines to build a complete picture of how a person's brain works. Depending on the individual and their areas of difficulty, the assessment team might include a paediatrician or other medical practitioner, a psychologist, a speech pathologist, and an occupational therapist. Not all of these professionals are involved in every assessment. The 2025 Guidelines emphasise flexible, collaborative input rather than prescribing a rigid team roster, and they explicitly accommodate settings where not every discipline is available locally (with external consultation and supervision recommended).

When you complete a FASD assessment with Scope, your assessment team will typically include your psychologist and your paediatrician.

The diagnostic criteria

To receive a FASD diagnosis, two things need to be present:

Evidence of prenatal alcohol exposure (Criterion A), confirmed through self-report, collateral report, or clinical records. Alternatively, if exposure can't be confirmed and other causes have been excluded, the presence of all three characteristic facial features may be considered sufficient.

Clinically significant impairment in three or more of nine neurodevelopmental domains (Criterion B): intellectual abilities, communication, motor skills, literacy and/or numeracy, memory, attention, executive functioning, emotional and/or behavioural regulation, and adaptive/social functioning.

Under the earlier 2016 Guide, a person needed to score in the bottom 3% on specific tests to meet the threshold for diagnosis. In practice, that meant someone whose difficulties were clearly affecting their everyday life could score just above the line and miss out on a diagnosis altogether. The 2025 Guidelines moved away from that rigid benchmark. Clinicians now assess whether impairment is 'clinically significant,' which means they look at the whole person and how their difficulties show up in daily life, not just the numbers on a test. It's a shift that makes room for clinical judgement and allows more people to be accurately identified.

If you want to know what the process looks like step by step, including pricing, wait times, and what to expect, Scope's FASD assessment page walks through each stage.

FASD and co-occurring or misdiagnosed conditions

FASD is frequently confused with, or occurs alongside, other neurodevelopmental conditions. This is one of the reasons so many people spend years with a diagnosis that doesn't quite fit. Getting the right one matters because the support strategies differ.

The most common misdiagnosis: ADHD

Hyperactivity, inattention, and impulsivity appear in both FASD and ADHD, making ADHD the most common misdiagnosis. A systematic review and meta-analysis (Popova et al., Lancet, 2016) found that more than half of people with FASD also meet criteria for co-occurring ADHD. The distinguishing factor: executive-function and memory difficulties in FASD tend to be more global and pronounced than in ADHD alone. If you're exploring an ADHD assessment, it's worth being aware of this overlap.

Other conditions that overlap with FASD

Beyond ADHD, several other conditions share features with FASD or can occur alongside it. Understanding where they overlap and where they differ is part of getting to the right diagnosis.

Autism

Autism and FASD can look similar on the surface, particularly when it comes to social interaction and communication. Both can involve difficulty reading social cues and navigating relationships. The difference lies underneath.

In FASD, social difficulties often flow from broader challenges with reasoning, memory, and impulse control. A person may genuinely want to connect but struggle to hold onto the thread of a conversation or predict how others will respond. Autistic social differences tend to follow a different pattern, shaped by differences in how sensory information, language, and social context are processed. Because the underlying causes are different, the assessments draw on different kinds of evidence, including developmental history, prenatal history, and how difficulties present across different areas of a person's life.

A thorough assessment looks past the surface to work out which condition best explains what's happening.

Intellectual disability

Intellectual disability overlaps, though many people with FASD have IQ scores in the average to borderline range. The "spiky profile" distinguishes FASD from a more uniform intellectual disability presentation.

Conduct and oppositional disorders

These are sometimes diagnosed when FASD-related behaviours are misread as wilful defiance, rather than brain-based difficulty with cause-and-effect reasoning and impulse control.

Genetic conditions and differential diagnosis

Clients are commonly referred for one of these conditions, and FASD emerges as the better explanation only after a thorough neurodevelopmental assessment. Importantly, certain genetic conditions can present similarly to FASD (including Williams syndrome, Cornelia de Lange syndrome, and 22q11 deletion syndrome), so genetic testing such as chromosomal microarray is recommended to rule these out before a FASD diagnosis is confirmed. This is generally something that a paediatrician will recommend as part of a thorough FASD assessment.

Living with FASD: Support, early intervention, and outlook

FASD is lifelong, and it's not something a person grows out of. But that isn't the whole story, and it's not where the conversation should stop. The right support, started early, makes a genuine and measurable difference to how a person's life unfolds.

Early intervention is the strongest protective factor

Early diagnosis and support reduce what researchers call "secondary" difficulties. These aren't caused by FASD itself. They come from the mismatch between a person's actual capacity and what the world expects of them. That gap, left unaddressed, is where the real damage happens.

The most striking of these is contact with the justice system. The Banksia Hill study found 36% of assessed young people in detention had FASD, the overwhelming majority undiagnosed. When people can't follow a conversation as well as their verbal fluency suggests, can't predict consequences, or can't resist peer pressure, they're vulnerable in ways that compound over time. Early allied-health support (speech pathology, occupational therapy, and psychology) builds skills and reduces frustration before problems escalate.

Strengths-based support changes the picture

Good FASD support doesn't start from "what's wrong." It starts from what someone is genuinely good at (often verbal ability, social warmth, creativity, practical skills) and builds on that while directly accommodating real limitations. This isn't a euphemism for lowering expectations. It's what the evidence shows actually works. The 2025 Australian Guidelines and the accompanying FASD Indigenous Framework both embed strengths-based, person-centred, and culturally responsive approaches. Supporting the whole family, including caregiver education that reframes behaviour as brain-based, is a core component.

What good support looks like across the lifespan

The support that makes the most difference tends to be consistent and structured. External memory aids (visual schedules, checklists, reminders) help bridge the gap between what someone understands in the moment and what they can reliably carry out. Educational adjustments, communication strategies, and coordinated allied health all play a role, and so does caregiver and family education and training. What that looks like will be different for a seven-year-old, a teenager, and a 50-year-old, but the principle stays the same: build on what works, support what doesn't, and adjust the environment around the person rather than expecting the person to simply cope.

FASD and the NDIS

FASD is recognised by the NDIS under List B. This means a diagnosis alone doesn't automatically guarantee access. Evidence of substantially reduced functional capacity is also required. Children under seven may access support via early-childhood early-intervention pathways where developmental delay is evident. For more on funding, see Scope's funding bodies page and financial assistance options.

Where to from here?

If you're trying to make sense of fetal alcohol spectrum disorder for your child, yourself, a family member, or a client, you don't have to work it all out at once. The most useful next step is often the simplest one. Download Scope's price list to understand what assessment involves, book a neurodevelopmental screening as a low-commitment starting point, or contact the team directly to talk through your situation.

For referring professionals looking for a clinical partner who covers the full breadth of neurodevelopmental conditions, see Scope's referral pathway.

Frequently asked questions

What's the difference between FASD and fetal alcohol syndrome (FAS)?

FAS is the older, narrower label describing the most visible presentation: facial features, growth problems, and brain dysfunction. FASD is the umbrella term that captures the full range of effects from prenatal alcohol exposure, including the majority of people who have no visible physical signs. FAS still exists as a descriptor within the FASD spectrum, but FASD is now the standard diagnostic term in Australia.

Can someone "grow out of" FASD?

No. FASD is a permanent, brain-based condition. The structural and functional changes caused by prenatal alcohol exposure don't reverse over time. But the right support can significantly improve quality of life and reduce secondary difficulties. People with FASD continue developing skills and strategies throughout their lives.

Does everyone with FASD also have an intellectual disability?

No. Many people with FASD have IQ scores in the average to borderline range. What's more typical is a "spiky profile": genuine strengths in some cognitive areas alongside significant weakness in others, particularly executive function, memory, and reasoning. This uneven profile is one of the things that distinguishes FASD from a more uniform intellectual disability.

Is there a safe amount of alcohol to drink during pregnancy?

No. The NHMRC's position is clear: there is no safe level of alcohol consumption during pregnancy, no safe trimester, and no safe type of alcohol. The current Australian Guidelines to Reduce Health Risks from Drinking Alcohol (2020) recommend that women who are pregnant or planning a pregnancy should not drink alcohol.

Can FASD be misdiagnosed as ADHD or autism?

Yes, and it happens regularly. ADHD is the most common misdiagnosis because hyperactivity, inattention, and impulsivity appear in both conditions. Autism shares surface similarities in social and communication differences. A thorough neurodevelopmental assessment considers the full clinical picture rather than matching symptoms to a single condition.

Where can I get a FASD assessment or diagnosis?

FASD assessment requires a multidisciplinary team with experience across a broad range of neurodevelopmental conditions. Scope Psychology offers FASD assessment from its Brisbane and Sunshine Coast clinics, and online Australia-wide. The assessment follows the 2025 NHMRC-approved Australian Guidelines. Our team can talk you through the other professionals that need to be involved in your assessment.

Where can psychology graduates gain clinical experience in FASD assessment?

FASD is a growing area of clinical need, and hands-on training opportunities are limited nationally. Scope offers supervised placements for provisional psychologists across the full range of neurodevelopmental conditions, including FASD assessment and diagnosis. The practice has partnerships with multiple universities and a structured training pipeline. If you're a psychologist  looking for a placement, get in touch.