Enterobiasis — DTM&H MCQ

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ModerateHelminthic infectionsEnterobiasisDTM&H

A 7-year-old child has nocturnal perianal itching after a family visit to a crowded refugee camp. Stool microscopy is negative. What is the most likely diagnosis?

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Correct answer: B — Perianal adhesive tape test

Perianal adhesive tape test is the single best answer because Enterobius eggs are deposited perianally at night, so an adhesive tape test is more sensitive than routine stool microscopy. Midday urine microscopy is plausible in a related presentation, but it is less appropriate because it does not fit the key discriminator in this vignette. The teaching point is that household treatment and hygiene measures reduce reinfection.

Reference: Manson's Tropical Diseases; WHO neglected tropical diseases guidance; CDC DPDx