Rheumatic heart disease in children is a serious but preventable condition that develops after an untreated or poorly treated throat infection. This guide is written for parent.
In this article, you will learn about:
- What rheumatic heart disease in children is
- What causes it and which children are at higher risk
- Common signs and symptoms to watch for
- How doctors diagnose rheumatic fever and rheumatic heart disease
- Treatment options and long‑term care
- Possible complications
- The most important steps to prevent it
What Is Rheumatic Heart Disease in Children?
Rheumatic heart disease (RHD) in children is long‑term damage to the heart valves that occurs after an episode or repeated episodes of rheumatic fever.
Rheumatic fever is an inflammatory disease that can develop 2–4 weeks after a throat infection caused by group A streptococcus bacteria (strep throat or scarlet fever). If this throat infection is not treated correctly with antibiotics, the child’s immune system can mistakenly attack parts of their own body, including:
- Heart
- Joints
- Skin
- Nervous system
When the heart is affected, the main target is the heart valves. Inflammation can cause scarring, thickening, narrowing or leaking of the valves. Over time, this damage can become permanent, leading to rheumatic heart disease.
Why Rheumatic Heart Disease in Children Matters
Rheumatic heart disease can have serious, lifelong effects on a child’s health if not prevented or treated early. It may lead to:
- Permanent valve damage – Valves can become too tight (stenosis) or leaky (regurgitation), affecting blood flow.
- Heart failure – The heart becomes too weak or too stiff to pump enough blood to the body.
- Heart rhythm problems (arrhythmias) – Irregular heartbeats can cause palpitations, dizziness, or even fainting.
- Stroke – Blood clots can form in a damaged heart and travel to the brain.
- Infective endocarditis – Infected valves are more prone to serious bacterial infections.
Although these complications may sound frightening, the important point is this: most cases can be prevented by recognizing and treating strep throat early and correctly.
Causes of Rheumatic Heart Disease in Children
Strep Throat and Rheumatic Fever
The root cause of rheumatic heart disease is untreated or inadequately treated strep throat or scarlet fever. The steps are usually:
- Child gets a throat infection with group A streptococcus (strep throat).
- Infection is not treated, or the antibiotic course is not completed.
- After 2–4 weeks, the immune system reacts abnormally and causes rheumatic fever.
- Rheumatic fever causes inflammation in the heart (carditis), especially the valves.
- Repeated attacks or severe inflammation lead to permanent valve damage, known as rheumatic heart disease.
Risk Factors for Rheumatic Heart Disease in Children
Not all children with strep throat develop rheumatic fever or heart disease. Certain factors increase the risk:
Age
- Most cases occur in children 5 to 15 years old.
- It is rare in children under 3 years and less common in adults.
Previous Rheumatic Fever
A child who has had one episode of rheumatic fever is at much higher risk of having another episode and developing progressive heart valve damage.
Family History and Genetics
Having close family members who had rheumatic fever or rheumatic heart disease may increase risk. Some children may have a genetic tendency to develop an abnormal immune response.
Crowded Living Conditions
Living in crowded environments (shared rooms, dormitories, camps) makes the spread of strep throat easier.
Limited Access to Medical Care
Areas with limited healthcare access, poor sanitation, or lack of antibiotics have higher rates of untreated strep throat, rheumatic fever, and rheumatic heart disease in children.
Symptoms of Rheumatic Fever and Rheumatic Heart Disease in Children
Signs and symptoms usually appear 2 to 4 weeks after a strep throat or scarlet fever infection.
General Symptoms of Rheumatic Fever
- Fever – Typically higher than 38.5°C (101.3°F)
- Fatigue and weakness – Child may be unusually tired, less active, or irritable
- Loss of appetite – Eating less than usual
Joint Symptoms
- Painful, swollen joints – Usually large joints such as knees, ankles, elbows, and wrists
- Red, warm joints – Joints may feel hot and look red or puffy
- Migratory joint pain – Pain moves from one joint to another over days
- Difficulty walking or using limbs – Child may avoid putting weight on painful joints
Heart Symptoms (Carditis)
- Shortness of breath – Especially during activity or when lying flat
- Rapid or pounding heartbeat (palpitations)
- Chest pain – A dull or sharp pain that may worsen with deep breaths
- Swelling in legs, ankles, or abdomen – Due to fluid buildup from heart failure
- Tiring easily – Less ability to play or exercise as before
Skin and Soft Tissue Signs
- Subcutaneous nodules – Small, firm, painless lumps under the skin, usually near joints.
- Erythema marginatum – A special rash with pink or red rings or wavy lines, often on the trunk or arms, not usually itchy.
Nervous System Symptoms (Sydenham Chorea)
- Uncontrolled, jerky movements – Hands, feet, face, and tongue may move suddenly and unpredictably.
- Facial grimacing – Involuntary facial expressions.
- Difficulty writing, buttoning clothes, or holding objects.
- Emotional changes – Irritability, crying, or mood swings.
How Is Rheumatic Heart Disease in Children Diagnosed?
Medical History and Physical Examination
The doctor will ask about recent sore throat, fever, or rash and examine the child’s joints, skin, heart, and nervous system. A heart murmur (abnormal heart sound) may suggest valve involvement.
Laboratory Tests
- Throat culture or rapid strep test – To confirm recent or current strep infection.
- Blood tests for strep antibodies (ASO, anti‑DNase B) – Show recent streptococcal infection.
- Inflammation markers – ESR and CRP are often elevated in active rheumatic fever.
Heart Tests
Electrocardiogram (ECG)
Measures the electrical activity of the heart and can detect rhythm or conduction problems.
Echocardiogram (Heart Ultrasound)
This is the most important test. It uses sound waves to create moving images of the heart and shows the structure and function of heart valves, revealing any narrowing (stenosis) or leaking (regurgitation).
Treatment of Rheumatic Fever and Rheumatic Heart Disease in Children
1. Antibiotic Treatment
Antibiotics are essential to kill the streptococcal bacteria. It is very important that the full course is completed.
2. Anti‑Inflammatory Medications
To reduce pain and inflammation, doctors may prescribe NSAIDs (like aspirin, under supervision) or corticosteroids in more severe cases.
3. Treatment of Sydenham Chorea
If a child has uncontrolled movements, doctors may prescribe medications to help control them.
4. Bed Rest and Activity Restriction
Children with active rheumatic fever, especially with heart involvement, may need rest and temporary restrictions on physical activity.
5. Long‑Term Antibiotic Prophylaxis
To prevent recurrent attacks, children are usually placed on long‑term preventive antibiotics, often for many years, sometimes up to age 21 or longer.
6. Surgery or Interventional Procedures
In severe cases, procedures like balloon valvotomy, valve repair surgery, or valve replacement surgery may be necessary.
Complications of Rheumatic Heart Disease in Children
Valve Stenosis (Narrowing)
The valve opening becomes too tight, restricting blood flow and making the heart work harder.
Valve Regurgitation (Leakage)
The valve does not close tightly, causing blood to flow backward and leading to heart enlargement.
Heart Failure
The heart becomes too weak to pump enough blood, causing shortness of breath, swelling, and poor growth.
Arrhythmias (Abnormal Heart Rhythms)
Damaged heart tissue can disrupt normal electrical signals, causing palpitations, dizziness, or fainting.
Infective Endocarditis
Damaged valves are more vulnerable to serious bacterial infections in the bloodstream.
Prevention of Rheumatic Heart Disease in Children
1. Recognize and Treat Strep Throat
Contact your child’s doctor for a sore throat with fever. If strep throat is confirmed, start antibiotics promptly and ensure your child completes the entire course.
2. Follow Long‑Term Prophylaxis if Prescribed
For children who have had rheumatic fever, do not skip preventive antibiotic injections or doses.
3. Promote Good Hygiene
Teach your child to wash hands regularly and avoid sharing cups or utensils.
When Should Parents See a Doctor?
Seek medical attention if your child has a persistent sore throat with fever. Seek urgent care for severe chest pain, sudden shortness of breath, fainting, or uncontrolled body movements.
Outlook for Children with Rheumatic Heart Disease
With early diagnosis, proper treatment, and careful follow‑up, many children with rheumatic heart disease can live active, healthy lives.
The most important message for parents is:
Rheumatic heart disease in children is largely preventable.
Never ignore or self‑treat persistent sore throats and always complete prescribed antibiotic courses