What is Foetal Alcohol Syndrome (FAS)?
FAS comes under the banner of Foetal Alcohol Spectrum Disorders (FASD), which is a broad spectrum of completely preventable intellectual and developmental deficits in individuals, resulting from maternal alcohol consumption during pregnancy. FAS can cause a range of physical and intellectual disabilities. Possible physical disabilities include facial differences and major organ damage, as well as hearing and vision impairments. Damage to the brain results in developmental disabilities, which can include general learning difficulties, language, social or motor skills impairment, memory impairment and attention deficits, poor consequential thinking, and poor planning ability. Children affected by FAS can also face misunderstanding about the often hidden cause of their very challenging learning behaviours. (adapted from Blackburn, Carpenter and Egerton, 2009).
FAS was first explicitly written about in 1973 (Jones and Smith1) however it has been the subject of academic and social interest since the late 19th Century (Sullivan, 18992). Since that time research has focussed on the characteristics and diagnosis of FAS.
FAS covers quite a broad range of syndromes and presentations. Other relevant terminology is listed below
- Foetal Alcohol Spectrum Disorder (FASD)
- Alcohol Related Neurodevelopmental Disorder (ARND)
- Alcohol Related Birth Defects (ARBD)
- Fetal Alcohol Effects (FAE)
- Pre-natal Alcohol Effects (PAE)
The only one of these terms that appears in a diagnostic manual, and therefore the only that can be formally diagnosed, is FAS, which appears in the ICD-10 diagnostic Manual. Each of the terms above is however a variation on the presentations seen in FAS.
The characteristics of FAS cover a range of physical, cognitive, social, behavioural and emotional markers (Gibbard et al., 20033 and Kodituwakku et al,. 20064).
Physical characteristics
Illustrastrated in the picture below.

Cognitive characteristics
- Impaired IQ
- Impaired executive functions (Working memory, impulse control, ability to plan etc.)
- Slow information processing
Behavioural/emotional characteristics
- Difficulty focussing attention
- Anxiety problems
- Disorganisation
Social characteristics
- Emotional immaturity
- Lack of social skills e.g. empathy, self-reflection
However caution should be exercised in using these characteristics to self-diagnose your child, their presence doesn’t necessarily mean that he or she has FAS and full multidisciplinary assessment is essential to determine FAS. The symptoms of FAS and those of Developmental Trauma overlap enormously (with the exception of the physical characteristics). In addition, many of the FAS related syndromes are not defined by the physical characteristics but by the neurodevelopmental signs listed above. There are no studies that have yet looked at separating the effects of FAS and related syndromes from the effects of Developmental Trauma or Reactive Attachment Disorder.
The current estimates regarding the prevalence of FAS is somewhere between 2 to 7 per 1000 live births (0.2 to 0.7%) and possibly as high as 2 to 5% for FAS and related disorders (see above) (May et al, 20095).
What is the difference between FAS and Developmental Trauma?
As detailed above there is no research out there at the moment to help us to separate what the difference is between these two clusters of problems. Differentiating between them is complex and requires very careful multi-disciplinary assessment. There is likely to be a high correlation between mothers who drink heavily in pregnancy poor ante-natal attachment or attunement and therefore it is an enormous challenge to determine which of these elements causes any particular child’s difficulties. Caution is needed when considering this complex overlap, the promise of a medical diagnosis can be very containing and/or reassuring but may lead to the wrong intervention if it is inaccurate. Also mistakenly diagnosing FAS may result in a focus on one particular element of a child’s difficulties and take focus away from the extreme effects of developmental trauma, but of course, the converse of this is also true.