Lithium-induced nephrotic syndrome in a young pediatric patient.

Lithium-induced nephrotic syndrome is a rare complication of lithium therapy and is even rarer in children. Most reported cases have been secondary to minimal change disease, which reverses within 1-4 weeks on discontinuation of lithium therapy. However, focal glomerulosclerosis (FSGS) has occasionally been reported and is not always reversible with discontinuation of lithium. We report an 11-year-old child with lithium-induced FSGS nephrotic syndrome who went into full remission after lithium was discontinued.