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- pregnancy
- congenital disorder
- fetus
fetal alcohol syndrome
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What is fetal alcohol syndrome?
Fetal alcohol syndrome (FAS) is a group of congenital defects in infants caused by the mother's alcohol consumption during pregnancy. FAS is the most severe form of fetal alcohol spectrum disorder (FASD).
Babies with FAS experience central nervous system abnormalities, which can result in intellectual disability, delayed development, and behavioral problems such as impulsivity and poor concentration. They also have retarded growth, and characteristic head and facial abnormalities like a small head, small eye openings, a short upturned nose, and a thin upper lip. Other possible abnormalities include defects of the joints, limbs, or internal organs, especially the heart. To prevent FAS, women should avoid alcohol consumption during pregnancy.
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How is fetal alcohol syndrome caused?
Fetal alcohol syndrome (FAS) is caused by a mother's alcohol consumption during pregnancy, which can result in congenital abnormalities in the newborn infant. FAS is the most severe form of fetal alcohol spectrum disorder (FASD) and appears to result from the effects of ethyl alcohol (ethanol) or its breakdown product acetaldehyde on the developing embryo or fetus.
Heavy drinking during pregnancy is linked to FAS, with more than 30% of women who drink heavily giving birth to babies with full FAS. Even occasional drinking by an expectant mother can endanger the development of the fetus and result in a variety of birth defects. Because of the possibility that the fetus may be harmed by even very low or infrequent doses, medical opinion supports the view that alcohol should be totally avoided during pregnancy.
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What are some common symptoms of fetal alcohol syndrome?
Fetal alcohol syndrome (FAS) is a collection of congenital defects in newborns caused by the mother's alcohol consumption during pregnancy. The syndrome results from the effects of ethyl alcohol (ethanol) or its breakdown product acetaldehyde on the developing embryo or fetus.
Principal symptoms include retarded growth before and after birth, abnormalities of the central nervous system, and distinctive head and face abnormalities. These include a small head, small eye openings, eyelid droop, skin folds at the inner eye corners, a short upturned nose, a long smooth area between nose and mouth, a thin upper lip, and a small jaw. Central nervous system abnormalities can result in intellectual disability, delayed intellectual development, and behavioral problems.
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How does alcohol affect the development of a fetus?
Fetal alcohol syndrome (FAS) is a set of congenital issues in newborns caused by a mother's alcohol consumption during pregnancy, resulting from ethyl alcohol's impact on the developing embryo or fetus. Heavy drinking during pregnancy is linked to FAS, with over 30% of heavy drinkers giving birth to babies with FAS.
Symptoms include retarded growth, central nervous system abnormalities, and distinctive facial features like a small head, short eye openings, and a smooth philtrum. Central nervous system issues can lead to intellectual disability and behavioral problems. It can also cause long-term health effects, such as increased cancer risk and atrophy of the cerebral cortex. Avoiding alcohol during pregnancy is recommended to prevent FAS.
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What parts of the body and brain are most impacted by fetal alcohol syndrome?
Fetal alcohol syndrome (FAS) is a collection of congenital defects in newborns caused by a mother's alcohol consumption during pregnancy, resulting from the effects of ethyl alcohol (ethanol) on the developing embryo or fetus.
The syndrome's primary symptoms include stunted growth, central nervous system abnormalities, and distinctive facial and head abnormalities. Facial traits include a small head (microcephaly), small eye openings, eyelid droop (ptosis), and a long, smooth philtrum. The central nervous system abnormalities can result in intellectual disability, poor concentration, impulsiveness, and an inability to consider consequences. Persons with FAS may also have defects of the heart, joints, and limbs.
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How is fetal alcohol syndrome diagnosed and managed by doctors?
Fetal alcohol syndrome (FAS), the most severe form of fetal alcohol spectrum disorder (FASD), arises from a mother's alcohol consumption during pregnancy, leading to congenital abnormalities in the newborn.
Diagnosis of FAS is based on a range of symptoms, including retarded growth, central nervous system abnormalities, and characteristic facial features such as a small head, small eye openings, and a smooth philtrum. There is no known safe amount of alcohol consumption during pregnancy; therefore, abstaining from alcohol is recommended. Management involves preventing FAS through counseling women to avoid alcohol before and during pregnancy.
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fetal alcohol syndrome (FAS), various congenital abnormalities in the newborn infant that are caused by the motherās ingestion of alcohol about the time of conception or during pregnancy. Fetal alcohol syndrome is the most-severe type of fetal alcohol spectrum disorder (FASD). The syndrome appears to result from the effects of ethyl alcohol (ethanol) or its breakdown product acetaldehyde on the developing human embryo or fetus.
The principal symptoms of a child born with fetal alcohol syndrome are retarded growth both before and after birth, various abnormalities of the central nervous system, and certain characteristic abnormalities of the face and head. The latter include microcephaly (small head), short palpebral fissures (small eye openings), ptosis (eyelid droop), epicanthic folds (skin folds over the inside eye corner), a short upturned nose, a long smooth philtrum (area between nose and mouth), a thin upper lip, and a small jaw. The central nervous system abnormalities result in intellectual disability or delayed intellectual development and various behavioral problems, such as poor concentration, impulsiveness, and an inability to consider the consequences of oneās actions. Persons born with FAS may also have abnormalities in various internal organs, including the heart, as well as abnormalities in the joints and limbs.
The overall global prevalence of FAS is uncertain, but the syndrome appears to occur with varying frequency in different countries as well as in different regions within countries. In the United States, FAS occurs with a frequency of anywhere from 0.2 to 2 cases for every 1,000 live births. In the early 21st century, the Western Cape and Northern Cape provinces of South Africa had some of the highest rates of FAS in the world, with overall estimates ranging from 67 to almost 90 cases per 1,000 live births.
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Despite extensive study, it remains unclear as to whether any amount of alcohol can be consumed safely at any stage of pregnancy or even in the weeks prior to conception. However, heavy drinking is clearly linked to FAS, with more than 30 percent of women who drink heavily giving birth to babies with full FAS. Alcohol consumption during pregnancy can lead to alcohol-related neurodevelopmental disorder (ARND) or alcohol-related birth defects (ARBD), which are other conditions that lie within the spectrum of FASDs. ARND and ARBD are characterized by the presence of some but not all symptoms of FAS.
To help prevent FAS, women are often counseled to abstain from imbibing any amount of alcohol shortly before and during pregnancy. It is also often advised to prolong that period of abstinence throughout breast-feeding, or at least to avoid drinking alcohol during specified hours before nursing, because various other disorders of the newborn have been linked to alcohol in breast milk.