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Acute Pharyngitis

Acute Pharyngitis

Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:

Tonsillitis I: Introduction

Tonsillitis I: Introduction

Tonsillitis is inflammation of the tonsils, which are two lymphoid tissue masses at the back of the throat. This condition can cause discomfort and irritation in the throat.
Etiology
Three primary contributing factors have been identified.

Chronic Pharyngitis

Chronic Pharyngitis

Chronic pharyngitis refers to persistent inflammation of the pharyngial mucosa.
Etiology
It often arises from persistent viral or bacterial infections affecting sinuses and tonsils.
Additional contributing factors include inadequate dental hygiene, mouth breathing, recurring tonsillitis, allergic rhinitis, laryngopharyngeal reflux, and exposure to smoke, chemicals, and other environmental pollutants. Allergic reactions to pollen, mold, and pet dander, chronic cough, excessive voice usage,...

Diphtheria

Diphtheria

Diphtheria is an acute, toxin-mediated infectious disease that primarily affects the upper respiratory tract. It is caused by Corynebacterium diphtheriae, a Gram-positive, pleomorphic rod that lacks spore-forming capability and exhibits a characteristic club-shaped morphology under microscopic examination. While C. diphtheriae can asymptomatically colonize mucosal surfaces, clinical disease manifests only when the bacterial strain is lysogenized by a specific β-corynephage. This phage...

Tonsillitis II: Management

Tonsillitis II: Management

This lesson will focus on the different treatment options for managing tonsillitis, which typically depend on the cause and severity.

Rheumatic Heart Disease I: Introduction

Rheumatic Heart Disease I: Introduction

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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Related Experiment Video

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Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria

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Streptococcal acute pharyngitis.

Lais Martins Moreira Anjos¹, Mariana Barros Marcondes¹, Mariana Ferreira Lima¹

¹Departamento de Clínica Médica, Faculdade de Medicina de Botucatu, Universidade Estadual Paulista, Botucatu, SP, Brazil.

Revista Da Sociedade Brasileira De Medicina Tropical

|September 18, 2014

Summary

Streptococcus pyogenes causes acute pharyngitis and can lead to serious complications. Diagnosis relies on clinical signs, throat culture, or rapid antigen tests, with penicillin as the primary treatment.

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Area of Science:

Infectious Diseases
Microbiology
Public Health

Background:

Acute pharyngitis/tonsillitis is a common condition with various causes.
Streptococcus pyogenes (Group A Streptococcus) is the primary bacterial pathogen requiring specific diagnosis and treatment.
S. pyogenes infections can lead to severe systemic complications like acute rheumatic fever and glomerulonephritis.

Purpose of the Study:

To review the diagnosis and management of acute pharyngitis caused by Streptococcus pyogenes.
To highlight the clinical significance and potential complications of S. pyogenes infections.
To discuss current diagnostic methods and future prevention strategies.

Main Methods:

Review of clinical presentation and diagnostic approaches for streptococcal pharyngitis.
Evaluation of diagnostic tools including throat culture, rapid antigen detection tests, and clinical scoring systems (e.g., modified Centor score).
Discussion of treatment options, including penicillin, cephalosporins, and macrolides, and considerations for penicillin allergy.

Main Results:

S. pyogenes pharyngitis typically presents with abrupt onset of sore throat, fever, and exudates; cough and coryza suggest viral etiology.
Throat culture is the gold standard but is limited by availability and turnaround time.
Rapid antigen detection tests offer quick results, and clinical scoring systems aid in risk stratification.

Conclusions:

Prompt diagnosis and treatment of S. pyogenes pharyngitis are crucial to prevent complications.
Penicillin remains the first-line treatment, with alternatives for allergic patients.
Development of an anti-S. pyogenes vaccine is a promising future direction for prevention.