Viral Pharyngitis

Viral pharyngitis is inflammation of the pharynx caused by a viral infection and is a common clinical cause of sore throat. After respiratory viruses infect cells lining the throat, local immune signaling recruits inflammatory cells and increases tissue sensitivity, producing pain, redness, swelling, and sometimes fever or cough. In clinical practice, recognizing this pattern helps clinicians assess acute throat complaints, distinguish likely viral illness from bacterial causes, and select appropriate management, often emphasizing supportive care rather than unnecessary antibacterial treatment. Understanding viral pharyngitis also supports infection-control decisions and guides evaluation of patients with persistent or severe symptoms.

Viral Pharyngitis - Related Videos

Education

JoVE Core - Medical-Surgical Nursing

Acute Pharyngitis

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2025

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: • Viral: Accounting for 40% to 60% of cases, viral infections are the most prevalent cause. Common cold viruses, influenza, adenovirus, and Epstein-Barr virus (mononucleosis) are among the most...

Chronic Pharyngitis

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2025

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,...

Streptococcal Pharyngitis

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2026

Streptococcal pharyngitis, commonly known as “strep throat,” is an acute infection of the oropharyngeal tissues caused by the Gram‑positive Group A Streptococcus (Streptococcus pyogenes). Transmission occurs primarily through respiratory droplets expelled during coughing, sneezing, or talking.Mechanisms of Host Entry and Immune EvasionUpon entering the host, S. pyogenes adheres to the mucosal epithelial cells of the pharynx via surface proteins, notably lipoteichoic acid and the antiphagocytic...

Research

JoVE Journal - Developmental Biology

Ex Vivo Culture of Pharyngeal Arches to Study Heart and Muscle Progenitors and Their Niche

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Cited by 5 •

2015

Here, we present a protocol to culture pharyngeal arches to study the biology of heart and muscle progenitor cells and their microenvironment.

Viral Recombination

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2019

Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment. Viral Recombination Can Create New Diseases Some diseases can infect multiple species. For example, pigs can be infected by some human and...

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