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Overview
What Is Congenital Disease?
Congenital disease refers to a condition that is present at birth. Some conditions are inherited through changes in genes or chromosomes, while others develop because of changes during fetal development or a combination of factors. A congenital condition may affect any body system, and its severity can range from mild to life-threatening. Treatment and long-term support vary widely depending on the specific condition.
Symptoms
Symptoms and Signs
Some congenital disorders cause visible differences or symptoms at birth, while others become apparent later. Changes in development, feeding, movement, breathing, or organ function may prompt an evaluation. The signs depend on the body system involved, and no single symptom identifies a particular congenital malformation.
- Persistent difficulty feeding or poor weight gain.
- Breathing problems or frequent pauses in breathing.
- A difference in the shape or structure of part of the body.
- Delayed movement, speech, or other developmental skills.
- Reduced movement or unusual muscle stiffness (abnormal muscle tone).
- Repeated vomiting or difficulty keeping feeds down.
- Seizures or episodes of unusual responsiveness.
- Yellowing of the skin or eyes (jaundice).
Important
When to arrange an evaluation
Ask a clinician to evaluate persistent, unexplained, or worsening developmental, feeding, breathing, movement, or physical findings. Do not try to identify a specific congenital condition from symptoms alone.
Causes
Causes of Congenital Disease
Congenital conditions develop before birth, while the fetus is forming and growing. Possible contributors include chromosome or gene changes, disrupted organ development, infections or other exposures during pregnancy, and nutritional deficiencies. In many cases, several factors may be involved, and a specific cause cannot be found.
- Genetic or chromosomal changes can alter how cells develop and how organs form.
- Pregnancy-related exposures, including some medicines, chemicals, alcohol, or infections, may affect fetal development.
- Nutritional factors, such as inadequate folate, can contribute to some congenital conditions.
- Some congenital disorders result from a combination of genetic and environmental influences.
- In many children, no specific cause is identified despite appropriate evaluation.
Risk Factors
Risk Factors
Risk factors vary by condition and may include family history, parental genetic factors, parental age, maternal health, nutritional status, infections, medicines or other exposures, and limited access to prenatal care. Some factors cannot be changed, while others can be addressed before or during pregnancy. A risk factor may increase the likelihood of a congenital disorder but cannot predict an individual outcome.
| Risk factor type | Examples | What can be done |
|---|---|---|
| Nonmodifiable | Family history, inherited gene changes, chromosome changes, or parental age | Discuss family history and genetic counseling with a clinician when appropriate. |
| Potentially modifiable | Low folate intake, poorly controlled chronic disease, or preventable infections | Use recommended folic acid, manage health conditions, and follow vaccination and infection-prevention advice. |
| Medication or exposure-related | Some medicines, alcohol, tobacco, chemicals, or other harmful exposures | Review medicines with a clinician and avoid harmful exposures; do not stop prescribed treatment without advice. |
| Access-related | Limited access to prenatal care, screening, nutrition, or infection treatment | Seek preconception and prenatal care as early as possible and ask about available support. |
Remember
Risk is not blame
Risk factors do not predict what will happen to one child, and caregivers should not blame themselves for a congenital condition. A healthcare team can explain which factors may be relevant in an individual situation.
Complications
Complications
Possible complications depend on the affected body system, the severity of the condition, and whether other health problems are present. They may involve growth, development, feeding, breathing, mobility, organ function, learning, or emotional well-being. Some children have few effects, while others need complex care throughout life.
- Some conditions may affect physical growth or weight gain.
- Developmental differences may affect movement, speech, learning, or independence.
- Problems with swallowing or digestion may make feeding and nutrition difficult.
- Heart, lung, kidney, or other organ involvement may require ongoing monitoring.
- Mobility limitations may affect daily activities and participation.
- Long-term medical needs may affect emotional well-being for the child and family.
Diagnosis
Diagnosis
Diagnosis is condition-specific. Clinicians combine medical and family history, a physical examination, developmental assessment, and targeted testing to understand a child’s findings. Depending on the concern, evaluation may take place before birth, shortly after birth, or later in childhood.
- Prenatal ultrasound or other prenatal testing may identify structural differences or possible developmental concerns before birth.
- Newborn screening checks for selected conditions soon after birth, often before symptoms appear.
- A physical and developmental examination can identify differences in structure, growth, movement, or skills.
- Imaging and organ-function tests can assess structures such as the heart, brain, kidneys, or lungs.
- Genetic or laboratory testing may be recommended when the findings suggest a particular condition or biological pathway.
Screening versus diagnosis
A screen is not always a diagnosis
A screening result can indicate that more evaluation is needed, but it does not always confirm a condition. Follow-up testing with an appropriate specialist may be necessary.
Treatment & Management
Treatment and Management
Treatment depends on the specific condition, affected organs, symptoms, age, and overall health. Care may aim to correct a structural problem, control symptoms, prevent complications, support development, or provide long-term assistance. Some children need one treatment, while others benefit from coordinated care across several specialties.
- Regular monitoring can track growth, development, organ function, and changes in symptoms.
- Medicines may treat symptoms, replace missing substances, or protect organ function.
- Surgery or other procedures may repair structural differences or improve organ function.
- Physical, occupational, speech, or other rehabilitation therapies can support skills and independence.
- Nutritional and developmental support can address feeding, growth, learning, or communication needs.
- Assistive devices may improve movement, hearing, vision, communication, or daily activities.
- Coordinated specialist care can connect families with genetics, cardiology, surgery, therapy, or other services.
Prevention & Screening
Prevention and Screening
Not all congenital diseases can be prevented. Preconception and prenatal care may lower the risk of some conditions, support maternal health, and improve early detection. Screening can identify a possible concern, but screening results may require diagnostic testing before a condition is confirmed.
- Take the recommended folic acid supplement before conception and during early pregnancy after discussing the amount with a clinician.
- Follow vaccination and infection-prevention advice before and during pregnancy.
- Manage chronic conditions such as diabetes with guidance from the healthcare team.
- Review all medicines, supplements, and exposures with a clinician before changing or starting them.
- Avoid alcohol, tobacco, and other harmful exposures during pregnancy.
- Attend regular prenatal visits so health concerns, fetal development, and available screening can be discussed.
| Type | When it occurs | Purpose |
|---|---|---|
| Prenatal screening | During pregnancy | Estimates the chance of selected conditions or identifies possible structural findings; it does not always confirm a condition. |
| Diagnostic prenatal testing | During pregnancy, when indicated | Examines a specific concern in greater detail and may confirm or rule out selected conditions. |
| Newborn screening | Soon after birth | Checks for selected conditions that may benefit from early treatment; an abnormal result usually needs follow-up testing. |
Outlook and Prognosis
Outlook and Prognosis
The outlook for congenital disorders ranges from minimal long-term impact to lifelong complex care. Prognosis depends on the specific condition, which organs are involved, severity, associated conditions, response to treatment, and access to appropriate care and support. Some conditions can be corrected or managed effectively, while others require ongoing monitoring and assistance.
- What functions, activities, or developmental skills might be affected?
- How could the condition influence growth, learning, or independence?
- How might the child respond to the recommended treatment?
- What monitoring, tests, or specialist visits will be needed over time?
- What therapies, school services, or community support may be helpful in the future?
When Should You See a Doctor
When Should You See a Doctor?
- Arrange medical evaluation after an abnormal prenatal or newborn screening result, even if the child appears well.
- Ask for an evaluation of unexplained physical differences present at birth or noticed later.
- Seek care for persistent feeding problems, poor weight gain, or breathing problems.
- Discuss delayed development, loss of skills, unusual movements, or seizures with a clinician.
- Share a relevant family history of congenital disorders or a known genetic condition with the care team.
Get urgent help
Know the emergency warning signs
Seek urgent emergency care for severe breathing difficulty, blue or gray skin, unresponsiveness, uncontrolled seizures, or other rapidly worsening symptoms.
Branches
1 topic
Congenital Disease
Medical Genetics
