NORCET 5 Prelims - Se…: Foul-smelling discharge from unilateral nose is seen in?

NORCET 5 Prelims - Sept 2023 (Shift-1)

Medical & Surgical Nursing

Easy

Appeared in: NORCET 5 Prelims - Sept 2023 (Shift-1)

Explanation

A foreign body lodged in the nasal passage causes unilateral obstruction of normal sinus drainage.
This obstruction leads to a buildup of secretions, creating a favorable environment for bacterial overgrowth.
The resulting infection produces a purulent (pus-like) and malodorous (foul-smelling) discharge from the affected nostril.
This presentation is considered a classic sign of a nasal foreign body, especially in toddlers and young children who may insert small objects into their nose.

Option B: A rhinolith is a calcified concretion that forms around a long-standing nasal foreign body. While it does cause unilateral, foul-smelling discharge, it is a chronic complication or a specific type of foreign body, not the initial and most common cause.
Option C: Sinusitis typically presents with bilateral nasal discharge. While the discharge can be purulent, it is not usually foul-smelling. Unilateral, foul-smelling sinusitis is uncommon and usually suggests a dental origin (odontogenic sinusitis).
Option D: Rhinitis (inflammation of the nasal mucosa) typically causes bilateral symptoms. Allergic rhinitis leads to clear, watery discharge, while viral rhinitis (common cold) causes mucoid discharge. Neither is typically unilateral or foul-smelling.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Differential diagnosis of unilateral nasal discharge as background academic context rather than a clinical decision trigger.
In any child presenting with unilateral, foul-smelling nasal discharge, a foreign body must be the top suspicion until proven otherwise. This is a crucial patient safety point.
Prompt removal of a nasal foreign body is essential to prevent complications such as rhinolith formation, septal perforation (especially from button batteries), sinusitis, and aspiration of the object.
What if the discharge was bilateral, crusted, and foul-smelling in an adult, who also cannot smell it? The diagnosis would more likely be Atrophic Rhinitis (Ozena), a different condition altogether.

How to Approach the Question

First, identify the key descriptors in the question: 'unilateral' and 'foul-smelling discharge'.
Consider each option in the context of these two key features.
Evaluate 'Foreign body': This is a classic cause of a unilateral obstruction leading to infection and a foul smell. This is a strong match.
Evaluate 'Rhinolith': This also causes the same symptoms, but it's a complication of a foreign body. 'Foreign body' is the primary event.
Evaluate 'Sinusitis' and 'Rhinitis': These conditions are typically bilateral. Unilateral presentation is atypical for them, making them less likely answers.
Conclude that 'Foreign body' is the most direct and common cause that perfectly explains the specific combination of symptoms described.

Concept Tested & Keywords

Concept Tested: Differential diagnosis of unilateral nasal discharge
Stem keywords: Foul-smelling discharge, unilateral nose
Lead-in keywords: is seen in
Clinical cues: The combination of unilateral discharge and foul odor strongly points to a localized, obstructive, and infectious process.