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NBME 24 Answers

nbme24/Block 4/Question#9

A 10-year-old boy who was adopted from the ...

Black fly

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submitted by brethren_md(39),

Onchocerca Volvulus via female blackfly. Black flies, black skin nodules, "black sight" (aka Blindness). Question stem here describes the black nodules seen in Onchocerca.

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submitted by famylife(33),

For Pictures: https://emedicine.medscape.com/article/1109409-clinical#b2