Overview

Fetal alcohol syndrome is a condition in a child that results from alcohol exposure during the mother's pregnancy. Fetal alcohol syndrome causes brain damage and growth problems. The problems caused by fetal alcohol syndrome vary from child to child, but defects caused by fetal alcohol syndrome are not reversible.

There is no amount of alcohol that's known to be safe to consume during pregnancy. If you drink during pregnancy, you place your baby at risk of fetal alcohol syndrome.

If you suspect your child has fetal alcohol syndrome, talk to your doctor as soon as possible. Early diagnosis may help to reduce problems such as learning difficulties and behavioral issues.

Symptoms

The severity of fetal alcohol syndrome symptoms varies, with some children experiencing them to a far greater degree than others. Signs and symptoms of fetal alcohol syndrome may include any mix of physical defects, intellectual or cognitive disabilities, and problems functioning and coping with daily life.

Physical defects

Physical defects may include:

  • Distinctive facial features, including small eyes, an exceptionally thin upper lip, a short, upturned nose, and a smooth skin surface between the nose and upper lip
  • Deformities of joints, limbs and fingers
  • Slow physical growth before and after birth
  • Vision difficulties or hearing problems
  • Small head circumference and brain size
  • Heart defects and problems with kidneys and bones

Brain and central nervous system problems

Problems with the brain and central nervous system may include:

  • Poor coordination or balance
  • Intellectual disability, learning disorders and delayed development
  • Poor memory
  • Trouble with attention and with processing information
  • Difficulty with reasoning and problem-solving
  • Difficulty identifying consequences of choices
  • Poor judgment skills
  • Jitteriness or hyperactivity
  • Rapidly changing moods

Social and behavioral issues

Problems in functioning, coping and interacting with others may include:

  • Difficulty in school
  • Trouble getting along with others
  • Poor social skills
  • Trouble adapting to change or switching from one task to another
  • Problems with behavior and impulse control
  • Poor concept of time
  • Problems staying on task
  • Difficulty planning or working toward a goal

When to see a doctor

If you're pregnant and can't stop drinking, ask your obstetrician, primary care doctor or mental health professional for help.

Because early diagnosis may help reduce the risk of long-term problems for children with fetal alcohol syndrome, let your child's doctor know if you drank alcohol while you were pregnant. Don't wait for problems to arise before seeking help.

If you have adopted a child or are providing foster care, you may not know if the biological mother drank alcohol while pregnant — and it may not initially occur to you that your child may have fetal alcohol syndrome. However, if your child has problems with learning and behavior, talk with his or her doctor so that the underlying cause might be identified.

Causes

When you're pregnant and you drink alcohol:

  • Alcohol enters your bloodstream and reaches your developing fetus by crossing the placenta
  • Alcohol causes higher blood alcohol concentrations in your developing baby than in your body because a fetus metabolizes alcohol slower than an adult does
  • Alcohol interferes with the delivery of oxygen and optimal nutrition to your developing baby
  • Exposure to alcohol before birth can harm the development of tissues and organs and cause permanent brain damage in your baby

The more you drink while pregnant, the greater the risk to your unborn baby. However, any amount of alcohol puts your baby at risk. Your baby's brain, heart and blood vessels begin to develop in the early weeks of pregnancy, before you may know you're pregnant.

Impairment of facial features, the heart and other organs, including the bones, and the central nervous system may occur as a result of drinking alcohol during the first trimester. That's when these parts of the fetus are in key stages of development. However, the risk is present at any time during pregnancy.

Risk factors

The more alcohol you drink during pregnancy, the greater the chance of problems in your baby. There's no known safe amount of alcohol consumption during pregnancy.

You could put your baby at risk even before you realize you're pregnant. Don't drink alcohol if:

  • You're pregnant
  • You think you might be pregnant
  • You're trying to become pregnant

Complications

Problem behaviors not present at birth that can result from having fetal alcohol syndrome (secondary disabilities) may include:

  • Attention deficit/hyperactivity disorder (ADHD)
  • Aggression, inappropriate social conduct, and breaking rules and laws
  • Alcohol or drug misuse
  • Mental health disorders, such as depression, anxiety or eating disorders
  • Problems staying in or completing school
  • Problems with independent living and with employment
  • Inappropriate sexual behaviors
  • Early death by accident, homicide or suicide

Prevention

Experts know that fetal alcohol syndrome is completely preventable if women don't drink alcohol at all during pregnancy.

These guidelines can help prevent fetal alcohol syndrome:

  • Don't drink alcohol if you're trying to get pregnant. If you haven't already stopped drinking, stop as soon as you know you're pregnant or if you even think you might be pregnant. It's never too late to stop drinking during your pregnancy, but the sooner you stop, the better it is for your baby.
  • Continue to avoid alcohol throughout your pregnancy. Fetal alcohol syndrome is completely preventable in children whose mothers don't drink during pregnancy.
  • Consider giving up alcohol during your childbearing years if you're sexually active and you're having unprotected sex. Many pregnancies are unplanned, and damage can occur in the earliest weeks of pregnancy.
  • If you have an alcohol problem, get help before you get pregnant. Get professional help to determine your level of dependence on alcohol and to develop a treatment plan.
May 25, 2017
References
  1. AskMayoExpert. Fetal alcohol syndrome. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2016.
  2. Fetal alcohol spectrum disorders (FASDs): Facts about FASDs. Centers for Disease Control and Prevention. https://www.cdc.gov/ncbddd/fasd/facts.html. Accessed March 13, 2017.
  3. Fetal alcohol spectrum disorders (FASDs): Alcohol use in pregnancy. Centers for Disease Control and Prevention. https://www.cdc.gov/ncbddd/fasd/alcohol-use.html. Accessed March 13, 2017.
  4. Fetal alcohol spectrum disorders (FASDs): Secondary conditions. Centers for Disease Control and Prevention. https://www.cdc.gov/ncbddd/fasd/secondary-conditions.html. Accessed March 13, 2017.
  5. Fetal alcohol syndrome. American Academy of Family Physicians. https://familydoctor.org/condition/fetal-alcohol-syndrome/#questions. Accessed March 13, 2017.
  6. Williams JF, et al. Fetal alcohol spectrum disorders. Pediatrics. 2015;136:e1395.
  7. Effects of alcohol on a fetus. Substance Abuse and Mental Health Services Administration. https://store.samhsa.gov/shin/content/SMA07-4275/SMA07-4275.pdf. Accessed March 13, 2017.
  8. Weitzman C, et al. Fetal alcohol spectrum disorder: Overview of management and prognosis. http://www.uptodate.com/home. Accessed March 13, 2017.
  9. Wilhoit LF, et al. Fetal alcohol spectrum disorders: Characteristics, complications, and treatment. Community Mental Health Journal. In press. Accessed March 13, 2017.
  10. Weitzman C, et al. Fetal alcohol spectrum disorder: Clinical features and diagnosis. http://www.uptodate.com/home. Accessed March 13, 2017.
  11. Hoecker JL (expert opinion). Mayo Clinic, Rochester, Minn. March 25, 2017.