Nephrotic syndrome associated with ant bite.

A 3-year-old child experienced edema of the face and extremities approximately 2 weeks after being stung on the legs, scrotum, and penis by "fire ants" (Solenopsis invicta). After diagnosis of idiopathic minimal-change nephrotic syndrome and treatment with steroids, the edema rapidly disappeared. Follow-up 3 years after his hospitalization showed no recurrence of nephrotic syndrome. We have correlated this case with previously published reports of the causal relationship of allergy to nephrotic syndrome, but we are unaware of any previously published correlation between ant bite and nephrotic syndrome.