Medical MCQ-A 6-year old child who presented with perianal pruritus, excoriation of skin and nocturnal enuresis was found to be infected with a parasite causing autoinfection. The causative agent is diagnosed by the -

A 6-year old child who presented with perianal pruritus, excoriation of skin and nocturnal enuresis was found to be infected with a parasite causing autoinfection. The causative agent is diagnosed by the –

NIH swab method

String test

Hetrazan test

Encysted larvae on muscle biopsy

Question Category:

Medicine

Correct Answer:

NIH swab method

Description:

The causative agent is Enterobius vermiculais & is diagnosed by NIH swab or perianal swab moistened with saline ie by applying the adhesive surface of cellophane tape to perianal skin in the morning & then this is examined on a glass slide inder microscope. Reference: Harrison20th edition pg 1102

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