La d A 9-year-old boy comes with complaints of right ear pain, difficulty in opening the mouth, painful swallowing, and fever. The oral cavity examination reveals the following. The external facial examination is unremarkable. Which of the following is likely?

Correct Answer: C. Quisny

Quinsy (peritonsillar abscess) is the most likely diagnosis given the clinical triad of unilateral ear pain, dysphagia, and trismus (difficulty opening mouth) in a child with fever. The pathophysiology involves suppuration of the peritonsillar space—the area between the palatine tonsil capsule and the superior pharyngeal constrictor muscle. This occurs as a complication of acute bacterial pharyngitis (usually Group A Streptococcus or Staphylococcus aureus), where infection spreads from the tonsillar parenchyma into the surrounding space. The characteristic presentation includes severe sore throat, odynophagia, fever, and the classic "hot potato" voice (muffled, thick voice). Trismus results from inflammation irritating the medial pterygoid muscle. Unilateral ear pain (otalgia) occurs due to referred pain via the glossopharyngeal nerve (CN IX). The external facial examination being unremarkable rules out parotid pathology. In Indian clinical practice, quinsy remains a common ENT emergency in children and adolescents, particularly in the pre-antibiotic era and in areas with delayed access to antibiotics. Early recognition and treatment with broad-spectrum antibiotics (amoxicillin-clavulanate or cephalosporins per IAP guidelines) and supportive care prevent progression to airway compromise or mediastinitis.

Why the other options are wrong

A. Pharyngitis — While quinsy arises as a complication of acute pharyngitis, simple pharyngitis does not typically cause trismus or the severity of unilateral otalgia described. Pharyngitis presents with sore throat and fever but lacks the focal peritonsillar space involvement and the characteristic difficulty opening the mouth. The presence of trismus is the discriminating sign that indicates suppuration beyond the tonsillar parenchyma. B. Parotid abscess — Parotid abscess would present with swelling over the angle of the jaw and external facial examination findings (facial swelling, redness over parotid region), which are explicitly stated as unremarkable in this case. Additionally, parotid pathology typically causes difficulty in chewing rather than the severe dysphagia and trismus seen here. The intraoral findings in quinsy (unilateral tonsillar swelling, soft palate deviation) would be absent in parotitis. D. Bezold's Abscess — Bezold's abscess is a complication of mastoiditis where pus tracks along the digastric groove beneath the sternocleidomastoid muscle, presenting with swelling below the angle of the jaw. This condition requires antecedent mastoid bone disease and presents with mastoid tenderness and external swelling—findings not described here. The clinical presentation of trismus, dysphagia, and intraoral findings is entirely inconsistent with mastoid pathology.

High-Yield Facts

Mnemonics

QUINSY Presentation Quintessential trismus (can't open mouth) | Unilateral otalgia (ear pain) | Inflammation of peritonsillar space | Neck stiffness (from inflammation) | Severe dysphagia (painful swallowing) | Yellow/purulent exudate (if drained). Use this when you see trismus + dysphagia + fever in a child. Trismus = Peritonsillar, Not Parotid Trismus (difficulty opening mouth) = medial pterygoid irritation from peritonsillar inflammation. Parotid swelling = external facial swelling (which is absent here). This discriminates quinsy from parotitis instantly.

NBE Trap

NBE may pair "ear pain + fever + sore throat" with parotitis to trap students who confuse referred otalgia (quinsy) with primary parotid disease. The key discriminator is external facial examination being unremarkable—this rules out parotid pathology and points to intraoral/peritonsillar pathology.

Clinical Pearl

In Indian pediatric practice, quinsy is often seen in children presenting to primary health centers with "severe throat pain and fever." The "hot potato" voice and inability to swallow saliva are bedside red flags that should prompt immediate referral to ENT for airway assessment and possible needle aspiration, especially in resource-limited settings where delayed intervention can lead to life-threatening airway compromise.

_Reference: Bailey & Love Ch. 38 (Pharynx and Larynx); OP Ghai Pediatric Nursing Ch. 12 (ENT infections in children)_