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

Black fly

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 +4  upvote downvote
submitted by brethren_md(44),

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

linwanrun1357  There is no black in the stem~~!! +  




 +1  upvote downvote
submitted by drmomo(1),

why can't it be culex mosquito? maybe wuchereria bancrofti filariasis?

sunshinesweetheart  diff presentation - that's elephentiasis +  
sunshinesweetheart  plus filariasis isn't the same as microfilariae +  




 +0  upvote downvote
submitted by famylife(37),

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





 +0  upvote downvote
submitted by linwanrun1357(0),

NOTE: Microfilaria:

Microfilariais an early stage in the life cycle of certain parasitic nematodes in the family Onchocercidae.--wiki

linwanrun1357  Only the the black fly is associated with nematodes +