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Related Concept Videos

Rheumatic Heart Disease I: Introduction01:23

Rheumatic Heart Disease I: Introduction

32
Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
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Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies01:22

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

46
The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...
46
Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

19
Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
19
Rheumatic Heart Disease III: Medical Management01:21

Rheumatic Heart Disease III: Medical Management

26
Rheumatic heart disease (RHD) management can be divided into two main strategies: prevention and long-term management.Primary PreventionPrimary prevention focuses on timely diagnosis and management of group A streptococcal pharyngitis to prevent acute rheumatic fever. The most widely used antibiotic for treating this condition is intramuscular benzathine penicillin G.Acute Rheumatic Fever TreatmentThe primary treatment goal for a patient diagnosed with acute rheumatic fever is to suppress the...
26
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests01:27

Atherosclerosis II: Clinical Manifestations and Diagnostic Tests

32
Atherosclerosis is a progressive disorder that leads to the thickening and narrowing of arterial walls due to plaque buildup. This condition can cause various symptoms depending on the arteries affected:Coronary Artery Disease (CAD): This condition affects the coronary arteries and may lead to chest pain (angina), shortness of breath (dyspnea), heart attacks, and other heart disease symptoms.Cerebrovascular Disease: This affects blood flow to the brain, causing transient ischemic attacks (TIAs)...
32
Myocarditis I: Introduction01:21

Myocarditis I: Introduction

23
Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
23

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Case 3-2026: A 58-Year-Old Woman with Diplopia and Fever.

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Toll-like receptor 1 polymorphism is associated with impaired immune tolerance, dysregulated inflammatory responses to <i>Borrelia burgdorferi</i>, and heightened risk of post-infectious Lyme arthritis.

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Bacterial and host enzymes modulate the pro-inflammatory response elicited by the peptidoglycan of Lyme disease agent Borrelia burgdorferi.

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The peptidoglycan of <i>Borrelia burgdorferi</i> can persist in discrete tissues and cause systemic responses consistent with chronic illness.

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Related Experiment Video

Updated: Aug 28, 2025

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR
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Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR

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Lyme Arthritis.

Sheila L Arvikar1, Allen C Steere1

  • 1Center for Immunology and Inflammatory Diseases, Massachusetts General Hospital, CNY149 Room 8301, 149 13th Street, Charlestown, MA 02129, USA.

Infectious Disease Clinics of North America
|September 18, 2022
PubMed
Summary
This summary is machine-generated.

Lyme arthritis (LA), a common manifestation of Borrelia burgdorferi infection, presents as joint pain and swelling. While antibiotics are effective, some patients develop persistent synovitis responding to anti-inflammatory treatments.

Keywords:
Borrelia burgdorferiInflammatory arthritisLyme arthritisLyme diseasePostantibiotic arthritisPostinfectious arthritis

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Area of Science:

  • Infectious Diseases
  • Rheumatology
  • Epidemiology

Background:

  • Lyme arthritis (LA) is a frequent late manifestation of Borrelia burgdorferi infection in the US.
  • Arthritis is now the primary presenting symptom for many LA patients, often affecting large joints like the knee.
  • Diagnosis relies heavily on serologic testing.

Purpose of the Study:

  • To review the clinical presentation of Lyme arthritis.
  • To outline diagnostic approaches for Lyme arthritis.
  • To discuss management strategies for Lyme arthritis.

Main Methods:

  • Review of clinical presentation of Lyme arthritis.
  • Analysis of diagnostic methods, primarily serologic testing.
  • Evaluation of treatment responses and management of persistent synovitis.

Main Results:

  • Lyme arthritis typically presents with mono- or oligoarticular swelling and pain, predominantly in the knee.
  • Serologic tests are the primary diagnostic tool for Lyme arthritis.
  • Most patients respond well to antibiotics, but a subset develops persistent post-infectious synovitis.

Conclusions:

  • Lyme arthritis requires prompt diagnosis and management.
  • Antibiotic therapy is generally effective, but persistent synovitis may necessitate anti-inflammatory treatment.
  • Understanding the presentation, diagnosis, and management is crucial for optimal patient outcomes.