Cardiology

Rheumatic Heart Disease: A Patient Guide

At a Glance

Rheumatic heart disease is lasting heart-valve damage after acute rheumatic fever, often following a Group A Streptococcus infection. Regular antibiotic prevention, echocardiograms, and follow-up can reduce repeat inflammation and further valve damage, while advanced disease may require valve repair or replacement.

Rheumatic heart disease (RHD) is a condition that begins not in the heart, but with a bacterial infection. When an infection like a “strep throat” caused by Group A Streptococcus (GAS) bacteria triggers a confused response from a susceptible person’s immune system, it causes Acute Rheumatic Fever ^[1]. Developing this is not the patient’s or family’s fault; many GAS infections do not lead to rheumatic fever, and it can occur despite appropriate treatment. Instead of only fighting the bacteria, the immune system mistakenly attacks the healthy tissue of the heart valves, a process known as molecular mimicry ^[2]. This “friendly fire” causes inflammation that, over time, can lead to permanent scarring and damage to the valves that keep blood flowing in the right direction ^[3].

The mitral valve is the most frequent target of this process, though other valves can be involved as well. As the valves become scarred, they may struggle to open fully (stenosis) or close tightly (regurgitation), forcing the heart to work harder to pump blood ^[4]. For many people, this damage is “silent” or latent for years, meaning they may feel completely healthy while the disease is quietly progressing ^[5]. This is why early detection through heart ultrasounds and consistent medical follow-up are so vital, as they allow doctors to see what the heart cannot yet feel ^[6].

The most important tool for living with RHD is a strategy called secondary prophylaxis, which involves regular, long-term antibiotic treatments—most commonly monthly injections—to prevent new strep infections ^[7]. By preventing the immune system from being “re-triggered” by a new infection, these treatments reduce the risk of recurrent acute rheumatic fever and further valve damage. In some children with early or borderline echocardiographic abnormalities, staying consistent with this care has been associated with a regression of those early findings, though this is not a promise that established valve scarring will heal ^[8].

As the condition moves into more advanced stages, the focus of care expands to managing the heart’s workload and watching for complications like irregular heartbeats or signs that the heart is becoming overwhelmed. While some patients may eventually require surgical procedures to repair or replace a damaged valve, the journey is one of careful management and partnership with a medical team ^[9]. With a clear understanding of the disease and a commitment to protective care, people living with RHD can look forward to a future focused on health and longevity ^[10].

In this guide

6 chapters

Understanding Your Diagnosis of Rheumatic Heart Disease

Learn what a rheumatic heart disease diagnosis means, how echocardiograms show valve damage, and how regular penicillin injections help prevent progression.

The Biology and Diagnosis of Your Heart Condition

Learn how rheumatic heart disease develops and how to read an echocardiogram report, including valve changes, stenosis, regurgitation, and borderline results.

Recognizing Symptoms and Emergency Signs

Learn to recognize rheumatic heart disease symptoms, stroke and heart failure warning signs, and when to call emergency services or seek same-day care.

Understanding Your Heart Valves and Disease Stages

Learn how rheumatic heart disease affects heart valves, what mild to severe stages mean, and how echocardiograms guide monitoring and treatment decisions.

The Standard of Care and Treatment Options

Learn how rheumatic heart disease is treated, from penicillin injections and heart medicines to valve repair or replacement, anticoagulation, and follow-up care.

Survivorship and Daily Life with RHD

Learn how to live with rheumatic heart disease, including echo follow-up, penicillin injections, dental care, pregnancy planning, and emotional support.

Common questions in this guide

What causes rheumatic heart disease?

Rheumatic heart disease can develop after acute rheumatic fever, which may follow a Group A Streptococcus infection such as strep throat. In some people, the immune system mistakenly attacks heart-valve tissue, causing inflammation and scarring. This does not mean the patient or family did anything wrong, and many strep infections do not lead to rheumatic fever.

Can early rheumatic heart disease improve?

Some children with early or borderline changes on an echocardiogram may have findings regress or stabilize when they consistently receive recommended preventive antibiotics. Established valve scarring generally does not simply heal, so a clinician must assess each person’s outlook.

Why are regular antibiotic injections needed for RHD?

Regular long-term antibiotics, often given as monthly injections, help prevent new Group A Streptococcus infections from triggering another episode of acute rheumatic fever. Preventing repeat inflammation lowers the risk of additional heart-valve damage. Follow the schedule set by your medical team and discuss missed doses promptly.

How is rheumatic heart disease monitored?

Heart ultrasounds, also called echocardiograms, let clinicians examine valve structure and function even when a person feels well. Regular follow-up helps track whether valve narrowing or leakage is changing and guides care over time.

Which heart valve is most often affected by rheumatic heart disease?

The mitral valve is the valve most frequently affected by rheumatic heart disease, although other heart valves can also be involved. The medical team can use echocardiograms to assess which valve is affected and how well it works.

What happens if rheumatic heart disease becomes advanced?

Care may include managing the heart’s workload and watching for complications such as irregular heartbeats or signs that the heart is becoming overwhelmed. Some people eventually need a procedure to repair or replace a damaged valve. The right plan depends on the severity of the disease and how well the valve functions.

Curated prompts to bring to your next appointment.

1.Is my heart damage currently at a stage where it could potentially reverse or stabilize with treatment?
2.What is the specific plan to ensure I don't miss any of my regular protective injections?
3.Which of my heart valves is most affected, and how are we going to monitor its function over time?
4.What signs of 'advancing' disease should I be looking for in my daily life?
5.How does this diagnosis affect my long-term plans for school, work, or starting a family?

Tap a prompt to share your answer — we'll use it plus this page's context to start a tailored conversation.

References (10)

1
Molecular Mimicry, Autoimmunity, and Infection: The Cross-Reactive Antigens of Group A Streptococci and their Sequelae.
Cunningham MW
Microbiology spectrum 2019; (7(4)) doi:10.1128/microbiolspec.GPP3-0045-2018.
PMID: 31373269
2
Genome-Wide Analysis of Genetic Risk Factors for Rheumatic Heart Disease in Aboriginal Australians Provides Support for Pathogenic Molecular Mimicry.
Gray LA, D'Antoine HA, Tong SYC, et al.
The Journal of infectious diseases 2017; (216(11)):1460-1470 doi:10.1093/infdis/jix497.
PMID: 29029143
3
Rapid screening for acute rheumatic fever using machine learning analysis of host tissue reactive antibodies.
Vo B, Rafeek RAM, Surve NZ, et al.
Scientific reports 2025; (15(1)):41316 doi:10.1038/s41598-025-25171-5.
PMID: 41271880
4
Recommendations for the Use of Echocardiography in the Evaluation of Rheumatic Heart Disease: A Report from the American Society of Echocardiography.
Pandian NG, Kim JK, Arias-Godinez JA, et al.
Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography 2023; (36(1)):3-28 doi:10.1016/j.echo.2022.10.009.
PMID: 36428195
5
Early rheumatic heart disease is a recognized intermediate on the pathway to advanced rheumatic heart disease.
Marangou J, Wirth SH, Zühlke L, et al.
International journal of cardiology 2026; (453()):134432 doi:10.1016/j.ijcard.2026.134432.
PMID: 41833866
6
2023 World Heart Federation guidelines for the echocardiographic diagnosis of rheumatic heart disease.
Rwebembera J, Marangou J, Mwita JC, et al.
Nature reviews. Cardiology 2024; (21(4)):250-263 doi:10.1038/s41569-023-00940-9.
PMID: 37914787
7
Subcutaneous infusion of high-dose benzathine penicillin G is safe, tolerable, and suitable for less-frequent dosing for rheumatic heart disease secondary prophylaxis: a phase 1 open-label population pharmacokinetic study.
Kado J, Salman S, Hla TK, et al.
Antimicrobial agents and chemotherapy 2023; (67(12)):e0096223 doi:10.1128/aac.00962-23.
PMID: 37971244
8
The natural history of latent rheumatic heart disease in a 5 year follow-up study: a prospective observational study.
Zühlke L, Engel ME, Lemmer CE, et al.
BMC cardiovascular disorders 2016; (16()):46 doi:10.1186/s12872-016-0225-3.
PMID: 26892774
9
Echocardiography Assessment of Rheumatic Heart Disease: Implications for Percutaneous Balloon Mitral Valvuloplasty.
Mohamed Ali A, Packer EJS, Omdal TR, et al.
Current problems in cardiology 2023; (48(12)):102021 doi:10.1016/j.cpcardiol.2023.102021.
PMID: 37544629
10
Health Related Quality of Life of Ugandan Children Following Valve Replacement Surgery for Rheumatic Heart Disease.
Ahmed MAM, Aliku T, Namuyonga J, et al.
Global heart 2023; (18(1)):37 doi:10.5334/gh.1205.
PMID: 37361321

This page explains rheumatic heart disease, prevention, and monitoring for educational purposes only; it does not replace medical advice. Your cardiology team can interpret your echocardiogram and recommend care for your situation.

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Guide Contents