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Home > Health Library > Down Syndrome
Down syndrome is a set of physical and mental traits caused by a gene problem that happens before birth. Children who have Down syndrome tend to have certain features, such as a flat face and a short neck. They also have some degree of intellectual disability. This varies from person to person. But in most cases it is mild to moderate.
Down syndrome is a lifelong condition. But with care and support, children who have Down syndrome can grow up to have healthy, happy, productive lives.
Down syndrome is caused by a problem with a baby's chromosomes. Normally, a person has 46 chromosomes. But most people with Down syndrome have 47 chromosomes. In rare cases, other chromosome problems cause Down syndrome. Having extra or abnormal chromosomes changes the way the brain and body develop.
Experts don't know the exact cause, but some things increase the chance that you'll have a baby with Down syndrome. These things are called risk factors.
Your risk of having a baby with Down syndrome is higher if:
If you've had a baby with Down syndrome and are planning another pregnancy, you may want to talk to your doctor about genetic counseling.
Children with Down syndrome have a range of symptoms and abilities that can include:
Many children with Down syndrome are also born with heart, intestine, ear, or breathing problems. These health conditions often lead to other problems, such as airway (respiratory) infections or hearing loss. But most of these problems can be treated.
Your doctor may suggest that you have tests during pregnancy to find out if your baby has Down syndrome. You may decide to have:
Sometimes a baby is diagnosed after birth. A doctor may have a good idea that a baby has Down syndrome based on the way the baby looks and the results of a physical exam. To make sure, the baby's blood will be tested. It may take 2 to 3 weeks to get the test results.
Starting soon after birth, a baby with Down syndrome will be tested for health problems, such as eye, ear, or thyroid problems. The sooner these problems are found, the better they can be managed. Regular doctor visits can help your child stay in good health.
Your doctor will make a treatment plan that meets your growing child's needs. For example, most children with Down syndrome need speech therapy and physical therapy. Teens and adults with Down syndrome may need occupational therapy to learn job skills and learn how to live on their own. Counseling may help if there are social or emotional issues..
Many professionals will help you and your child through life. But you are vital to your child's success. To help your child:
Raising a child with Down syndrome has both challenges and rewards. Remember to take time for yourself. And ask for help when you need it. Talking to other parents who are raising children with Down syndrome can be a big help. Ask your doctor or hospital about parent support groups, or contact a group like the National Down Syndrome Congress.
Learning about Down syndrome:
Living with Down syndrome:
Down syndrome is caused by abnormal cell division in early embryo development. Normally, a child inherits 46 chromosomes, 23 from each parent. Each chromosome carries DNA, called genes, which tell how the brain and body should develop.
But a fetus with Down syndrome has extra or abnormal chromosomes. Having extra genetic material changes the way the brain and body develop. The type of Down syndrome depends on how many cells have the extra or abnormal chromosomes.
Medical experts believe the cell changes most often start in a woman's egg before or at conception. Less often, the error occurs in sperm at conception. It is not known what causes the cells to divide abnormally. One type of Down syndrome, called translocation-type, may be passed down through families (inherited).
There are more than 50 features of Down syndrome. But not every person with Down syndrome has all the same features or health problems. Some features and problems are common.
Some health problems related to Down syndrome are:
Although every child is different, you may find it helpful to understand some patterns of Down syndrome as your child grows. It also helps to know that most people who have Down syndrome can flourish and live healthy, happy, and productive lives.
Many of the challenges for people with Down syndrome are related to intellectual disability and health problems. Problems may come up at different ages.
Your baby may reach growth and development milestones later than other children do. These may include rolling over, sitting, standing, walking, and talking.
In this age group, health problems and developmental disabilities can lead to behavior problems. For example, a child may develop oppositional defiant disorder in part because he or she does not communicate well or understand others' expectations.
Puberty starts at about the same ages for teens with Down syndrome as for other teens.
They may face social difficulties and vulnerabilities, such as abuse, injury, and other types of harm. They may also have a hard time handling strong emotions and feelings. Sometimes these struggles can lead to mental health problems, especially depression.
Men with Down syndrome most often are sterile and cannot father children. Many women with Down syndrome can have children, and they usually have early menopause.
Certain things increase the chance that you will have a baby with Down syndrome. These are called risk factors. Risk factors may be different based on the type of Down syndrome.
Trisomy 21 is the most common type of Down syndrome. People with this type have an extra chromosome (47 instead of 46) in every cell. Risk factors for this type include:
This type of Down syndrome is caused by only some cells producing 47 chromosomes. Mosaicism affects up to 3 out of 100 people who have Down syndrome.footnote 2 Risk factors for mosaicism are similar to those for trisomy 21.
Translocation type is the only type of Down syndrome that may be passed through families, but most of the time it happens randomly. A person with this type has 46 chromosomes, but part of one chromosome breaks and then attaches to a different chromosome. Up to 5 out of 100 people with Down syndrome have the translocation type.footnote 2
You may be a carrier of the translocation chromosome if you have:
If you are thinking about becoming pregnant and you're at risk for having a child with Down syndrome, you may want to see a geneticist or genetic counselor. They can help you understand your risk and work with you on genetic testing.
Call 911 or other emergency services immediately if your baby or very young child with Down syndrome shows signs of:
Call a doctor now if:
Call a doctor if a person with Down syndrome:
There are two types of tests for birth defects: screening and diagnostic. You may decide to have:
The decision to have a test for birth defects is personal. You have to think about your age, your chance of passing on a family disease, your need to know about any problems, and what you might do after you have the test results. Your spiritual beliefs and other values also may affect your decision.
To learn more about testing during pregnancy, see the topic Birth Defects Testing.
If Down syndrome was not diagnosed before your baby was born, doctors can often get a clear sense of whether your child has Down syndrome by how your baby looks and by doing a physical exam. But traits can be subtle in a newborn, depending on the type of Down syndrome that he or she has.
To confirm a diagnosis, a newborn will have a blood sample taken for chromosomal analysis, called a karyotype test.
Waiting for a formal diagnosis can be stressful. Try to focus on caring and bonding with your newborn and getting the help you need. Your doctor or hospital may also be able to refer you to local resources and support groups. For more information, see Treatment Overview.
Another challenge parents may face is finding a way to tell family members and friends about their child's condition. If you don't learn that your baby has Down syndrome until after he or she is born, you will have little time to absorb the information before you need to answer questions from excited family and friends who are eager for news.
The best approach may be to simply state the facts, such as, "Our baby was diagnosed with Down syndrome." If you aren't ready to talk about your child's condition beyond that, say so. You may feel able to tell only one or two people. If this is the case, consider asking them to share the news with others. Of course, there is no right or wrong way to tell people. Know that there are resources to help you.
Like all children, your child needs well-baby and well-child visits. He or she also needs regular checkups so your doctor can look for early signs of health issues that are common in people who have Down syndrome. The sooner health issues are found, the more easily they can be managed.
The American Academy of Pediatrics has guidelines about when and how often to check for certain health issues in children who have Down syndrome. The Down Syndrome Medical Interest Group also has health care guidelines for people who have Down syndrome.
It is common to experience a wide range of emotions when your baby is born with Down syndrome. While you have joy from your child's birth, you will also need to learn about and care for his or her special health care needs. Most families choose to raise their child, while some consider foster care or adoption. Support groups and organizations can assist you in making the best decision for your family.
Treatment for Down syndrome focuses on making sure that your child has regular medical checkups, helping your child develop, watching for early signs of health problems, and finding support. With treatment and support, you can help your child live a happy, healthy life.
You can help your child stay healthy by scheduling routine checkups. This will help to identify, manage, and monitor any diseases and health problems that people with Down syndrome have a higher chance of developing.
Doctors look for specific problems at various ages, such as cataracts and other eye conditions during a baby's first year. These checkups are also a good time for you and the doctor to talk about any concerns you have. Many parents have similar concerns as their children grow, including:
Although it may take extra time for your child to learn and master skills, you may be surprised at how much he or she will be able to do. With encouragement, your child can learn important skills. You can help your baby learn to walk, talk, or eat by himself. You can help your child make friends and do well in school. Later you can help him or her learn job skills and maybe live independently.
To learn how to help your child throughout life, see Home Treatment.
Your child may develop health problems related to Down syndrome, such as ear infections, dental problems, or behavior issues. He or she may need:
Your doctor or local hospital can refer you to community resources to help you learn what to expect and how to care for your baby who has Down syndrome.
You may also want to think about joining a support group. Talking and sharing with other parents of children with Down syndrome can help you manage difficult feelings. It can also help you know what kinds of challenges to expect, as well as help you to discover the joys other parents have experienced with their children. To learn more about support groups, see the Other Places To Get Help section of this topic.
Families of children who have Down syndrome may need other types of resources, such as:
It's also important to take time for yourself. Common frustrations and frequent highs and lows can all lead to exhaustion. Take good care of yourself so you have the energy to enjoy your child and attend to his or her needs. For more information, see the topic Caregiver Tips.
There are several controversial treatments (including supplements, surgery, and medicine) for Down syndrome that either have not been proved helpful or have questionable benefit. Some treatments may even cause physical harm or have ethical implications. Talk with your child's doctor before you try treatments that you and the doctor haven't yet discussed.
Down syndrome cannot be prevented. There are many things you can do to help your child live a happy and healthy life. For more information, see Treatment Overview.
As a parent of a child with Down syndrome, you play an important role in helping your child reach his or her full potential. You and your child will have challenges and accomplishments.
Your child will likely take more time than other children to reach certain milestones. But his or her achievements are just as significant and exciting to watch. Be patient, and encourage your young child as he or she learns.
Encourage your child to learn, socialize, and be physically active. For example, enroll your child in classes with other children of the same age. Think of ways you can stimulate your child's thinking skills without making tasks too difficult. But know that it is okay for your child to be challenged and sometimes fail.
Enroll your young child (infant through age 3) in an early-intervention program. These programs have staff who are trained to monitor and encourage your child's development. Talk with a doctor about programs in your area.
Keep encouraging your child to learn, socialize, and be physically active. Here are some tips:
Socially, teens who have Down syndrome have the same needs as everyone else. Most will want to date, socialize, and form intimate relationships. You can help your child develop healthy relationships by teaching appropriate social skills and behavior. Peer acceptance and self-esteem are affected by how well your preteen or teen addresses these issues.
Here are some tips:
During your child's teen years, you may also want to start planning for your child's future jobs and living arrangements. Many people who have Down syndrome live independently as adults in group homes or apartments with support services. But most group homes and community centers require a basic level of self-sufficiency, such as being able to eat, dress, and bathe independently. Vocational training helps many young adults learn how to work in many settings, such as stores, restaurants, and hotels.
Most adults who have Down syndrome function well in society. They often have regular jobs, have friends and romantic relationships, and take part in community activities.
An adult with Down syndrome benefits from working outside the home and having social activities. Having an active lifestyle with continued learning makes anyone, including a person with Down syndrome, feel more vibrant and feel that his or her life is meaningful.
Adult day care may be an option. Or the Special Olympics and other activities that emphasize exercise might be options. Encourage an adult's interests, such as in art or in hobbies such as drawing.
Cunningham FG, et al. (2010). Prenatal diagnosis and fetal therapy. In Williams Obstetrics, 23rd ed., pp. 287–311. New York: McGraw-Hill Medical.
Haldeman-Englert CR, et al. (2012). Specific chromosome disorders in newborns. In CA Gleason, SU Devaskar, eds., Avery's Diseases of the Newborn, 9th ed., pp. 196–208. Philadelphia: Saunders.
Other Works Consulted
American Academy of Pediatrics, American Academy of Family Physicians, and American College of Physicians-American Society of Internal Medicine (2002). A consensus statement on health care transitions for young adults with special health care needs. Pediatrics, 110(6): 1304–1306.
Bull MJ, et al. (2011). Health supervision for children with down syndrome. Pediatrics, 128(2): 398–406.
Cohen WI (2009). Down syndrome: Care of the child and family. In WB Carey et al., eds., Developmental-Behavioral Pediatrics, 4th ed., pp. 234–245. Philadelphia: Saunders Elsevier.
Driscoll DD, Gross SJ (2008). First trimester diagnosis and screening for fetal aneuploidy. Genetics in Medicine, 10(1): 73–75.
Steingass KJ, et al. (2011). Developmental disabilities grown up: Down syndrome. Journal of Developmental and Behavioral Pediatrics, 32(7): 548–558.
Summar K, Lee B (2011). Down syndrome and other abnormalities of chromosome number. In RM Kliegman et al., eds., Nelson Textbook of Pediatrics, 19th ed., pp. 399–404. Philadelphia: Saunders.
Current as of:
February 10, 2021
Author: Healthwise StaffMedical Review: John Pope MD - PediatricsKathleen Romito MD - Family MedicineLouis Pellegrino MD - Developmental Pediatrics
Current as of: February 10, 2021
Author: Healthwise Staff
Medical Review:John Pope MD - Pediatrics & Kathleen Romito MD - Family Medicine & Louis Pellegrino MD - Developmental Pediatrics
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