Koplik's spots are the clinical feature of?

AIIMS Patna NO - 2020

Medical Surgical Nursing

Easy

Appeared in: AIIMS Patna NO - 2020

Explanation

Koplik's spots are a definitive, pathognomonic sign of measles (rubeola).
As seen in the image, they appear as small, bluish-white spots on a bright red background inside the mouth, typically on the buccal mucosa opposite the molars.
They are an early sign, appearing 1-2 days before the characteristic maculopapular skin rash, during the prodromal phase of the illness.

Option A: The hallmark of cholera is profuse, painless, watery diarrhea, often described as "rice-water stool," leading to severe dehydration. It does not cause oral lesions like Koplik's spots.
Option B: Chickenpox (varicella) is characterized by a pruritic, vesicular rash (blisters) that appears in successive crops, often described as "dewdrops on a rose petal." While oral lesions can occur, they are typically shallow ulcers, not the distinct bluish-white Koplik's spots.
Option D: Pertussis, or whooping cough, is a respiratory infection characterized by severe fits of coughing (paroxysms) followed by a high-pitched "whoop" sound during inhalation. It does not present with any characteristic rash or oral spots.

Clinical Relevance

Nursing practice connection: Knowing Pathognomonic signs of infectious diseases helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Recognizing Koplik's spots is a critical nursing skill for the early diagnosis of measles, often before the more obvious rash appears.
Early identification allows for prompt implementation of airborne precautions to prevent transmission, especially in healthcare settings and communities.
What if? If the patient was a child with a high fever for three days, and a rash appeared only after the fever subsided, the diagnosis would more likely be Roseola (exanthem subitum), not measles. The timing of the rash relative to the fever is a key differentiator.

How to Approach the Question

First, analyze the question stem, which asks to identify the disease associated with 'Koplik's spots'.
Second, examine the provided image. Identify the key features: small, white spots on the red inner lining of the cheek (buccal mucosa).
Third, recall that these specific lesions are a pathognomonic (uniquely characteristic) sign for a particular infectious disease.
Fourth, evaluate the options based on their classic presentations: Cholera (diarrhea), Chickenpox (vesicular rash), and Pertussis (whooping cough).
Finally, conclude that Measles is the only disease among the options that presents with Koplik's spots, matching both the term and the image.

Concept Tested & Keywords

Concept Tested: Pathognomonic signs of infectious diseases
Stem keywords: Koplik's spots, clinical feature
Lead-in keywords: are the
Clinical cues: The presence of an image showing the inside of a mouth with small white spots on the cheek lining.

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