
Fetal Alcohol Syndrome (FAS) is a life-long condition caused by alcohol consumption during pregnancy. It is the most severe form of Fetal Alcohol Spectrum Disorder (FASD), which is a group of conditions that can occur in a person exposed to alcohol before birth. FASDs can have a wide range of physical, behavioural, and learning problems, and can be difficult to diagnose as there is no direct test for FAS. However, there are some signs of FAS in infants that can be used to make a diagnosis, including abnormal facial features such as small eyes, a thin upper lip, and a smooth philtrum (the groove between the nose and upper lip), as well as low birth weight and small head circumference.
| Characteristics | Values |
|---|---|
| Facial features | Small eyes, thin upper lip, smooth philtrum (ridge between nose and upper lip), minor facial features |
| Size | Small size at birth and throughout childhood |
| Behavioural issues | Impulsiveness, inattentiveness, poor judgment, hyperactivity, severe tantrums |
| Learning problems | Problems with memory, attention span, communication, difficulty in school |
| Growth problems | Poor growth, low birth weight, small head |
| Birth defects | Heart, bone, kidney, eye problems, hearing loss, seizures, balance and coordination issues |
| Neurological problems | Vision problems, learning disabilities, cognitive issues |
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What You'll Learn

Abnormal facial features
Fetal Alcohol Syndrome (FAS) is a life-long condition that affects individuals who were exposed to alcohol in utero. It is the most severe condition on the Fetal Alcohol Spectrum Disorder (FASD) spectrum.
Partial Fetal Alcohol Syndrome (pFAS) is a less severe form of FAS. Individuals with pFAS have some of the facial features associated with FAS but do not exhibit all the symptoms. They may also experience growth problems or central nervous system (CNS) abnormalities.
The risk of FASD increases with the amount of alcohol consumed, the frequency of consumption, and the duration of alcohol consumption during pregnancy, particularly binge drinking. FASDs can be prevented if a developing baby is not exposed to alcohol.
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Poor growth and low birth weight
Fetal Alcohol Syndrome (FAS) is a preventable condition caused by alcohol consumption during pregnancy. It is the most severe condition on the fetal alcohol spectrum disorder (FASD) scale, which includes partial fetal alcohol syndrome (pFAS), alcohol-related neurodevelopmental disorder (ARND), alcohol-related birth defects (ARBD), and neurobehavioral disorder associated with prenatal alcohol exposure (ND-PAE). The effects of FAS are lifelong and can include physical and mental defects, with symptoms ranging from mild to severe.
Maternal nutrition and pre-pregnancy weight may play a role in moderating the effects of prenatal alcohol exposure on fetal growth. Studies have found that children born to mothers with lower pre-pregnancy weights and alcohol abuse and/or dependence showed stronger effects of alcohol on growth. This may be due to higher blood alcohol concentrations in smaller mothers or increased vulnerability in infants born to mothers with poorer nutrition.
Diagnosing FAS can be challenging, as there is no direct medical test. Pediatric providers may suspect FAS based on the infant's size, specific physical signs, and symptoms that develop throughout childhood. In addition to poor growth and low birth weight, other signs of FAS in infants may include abnormal facial features, emotional and behavioral issues, vision and hearing problems, and developmental delays.
The only way to prevent FAS is to avoid consuming alcohol during pregnancy. Even small amounts of alcohol can potentially harm the developing fetus, and stopping alcohol consumption as early as possible is crucial for the baby's health.
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Birth defects
Fetal Alcohol Syndrome (FAS) is caused by alcohol consumption during pregnancy. It is a life-long condition with no cure, and those affected may experience permanent physical and mental defects.
Alcohol-related birth defects (ARBD) are physical birth defects that can affect the heart, eyes, skeletal system, ears, and kidneys. Vision problems and hearing loss are common. Seizures and other neurological problems, such as learning disabilities, poor balance, and coordination issues can also occur. FAS can also cause growth problems, with newborns having low birth weights and small heads, and they may not grow or gain weight at the same rate as other children.
FAS is the most severe type of Fetal Alcohol Spectrum Disorder (FASD). FASDs are a group of preventable conditions that can occur when a person is exposed to alcohol before birth. The conditions can affect each person differently, ranging from mild to severe. FASDs can cause physical, behavioural, and learning problems, and those affected will often struggle at school and socially.
Diagnosing FASDs can be challenging due to the lack of a direct medical test. Pediatric providers base their diagnosis on the size of the child, specific physical signs, and symptoms that develop through childhood. FASDs can be prevented if a developing baby is not exposed to alcohol.
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Behavioural issues
Children with FASDs tend to exhibit behavioural problems such as impulsiveness, inattentiveness, and poor judgment. They may also struggle with social interactions and have difficulty in school due to learning disabilities and poor impulse control. These behavioural issues can lead to significant impairments in functional behaviour and are often the result of underlying brain damage caused by prenatal alcohol exposure.
One of the most severe behavioural disorders associated with FASDs is neurobehavioral disorder associated with prenatal alcohol exposure (ND-PAE). Children with ND-PAE have been exposed to significant amounts of alcohol as a fetus, and they may exhibit severe behavioural issues such as frequent and intense tantrums, making it difficult for them to navigate social settings. They may also struggle with daily tasks like bathing and have problems with impulse control.
Alcohol-related neurodevelopmental disorder (ARND) is another FASD that can result in behavioural issues. Children with ARND may exhibit intellectual disabilities, along with problems with behaviour and learning. They often struggle in school and have difficulties with math, memory, attention, and judgment.
The behavioural issues associated with FASDs can be challenging for both the child and their caregivers. However, early intervention services, support from schools, and a stable and nurturing home environment can help reduce the impact of these disorders. Additionally, parent training can provide caregivers with the tools they need to handle any problem behaviours and support their child's development.
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Learning difficulties
Fetal Alcohol Spectrum Disorders (FASDs) can cause a range of physical, behavioural, and learning problems in infants. These disorders are caused by alcohol consumption during pregnancy, with the severity of symptoms depending on the amount of alcohol consumed, the frequency, and the duration of consumption. FASDs can be prevented if a developing baby is not exposed to alcohol.
Fetal Alcohol Syndrome (FAS) is the most severe type of FASD. It can cause intellectual disabilities, including problems with learning, memory, attention span, communication, vision, and hearing. Children with FAS tend to struggle in school and have trouble getting along with others. They may also exhibit impulsive behaviour, inattentiveness, and poor judgment.
Partial Fetal Alcohol Syndrome (pFAS) is a less severe form of FAS. Individuals with pFAS may exhibit some of the facial characteristics of FAS, such as a smooth connection between the nose and upper lip, but they do not meet the full diagnostic criteria. They may also have growth problems or central nervous system (CNS) abnormalities.
Alcohol-Related Neurodevelopmental Disorder (ARND) is another FASD that can cause intellectual disabilities and problems with behaviour and learning. Children with ARND may struggle with math, memory, attention, judgment, and impulse control. They may also exhibit behavioural issues such as severe tantrums and difficulty with social settings.
FASDs can be challenging to diagnose, as there is no direct medical test, and pregnant women may not disclose their alcohol intake history. Diagnosis is typically based on physical signs and symptoms, as well as evidence of alcohol use during pregnancy. Early diagnosis and intervention can make a significant difference in the child's life, and support is available through healthcare professionals, schools, and support groups.
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Frequently asked questions
Fetal alcohol syndrome (FAS) is a life-long condition caused by alcohol consumption during pregnancy. It is the most severe condition on the fetal alcohol spectrum disorder (FASD) scale.
FAS can be difficult to diagnose as there is no direct test for it. Pediatric providers may make a diagnosis based on the size of the child, specific physical signs, and symptoms that develop through childhood. Physical signs can include abnormal facial features such as a smooth connection between the nose and upper lip, a thin upper lip, and small eyes. Infants may also have low birth weights and small heads.
Children with FAS may also experience emotional and behavioral issues, such as impulsiveness, inattentiveness, and poor judgment. They may also have intellectual disabilities, including problems with learning, memory, attention span, communication, vision, or hearing.
Yes, FAS can be prevented by not drinking alcohol during pregnancy. If you are pregnant and struggling with an alcohol problem, it is important to seek help from a midwife or doctor.











































