Nephrotic syndrome secondary to lithium therapy

Area of Science:

• Nephrology
• Psychiatry
• Pharmacology

Background:

• Lithium carbonate is a common treatment for bipolar disorder (manic-depressive psychosis).
• Nephrotic syndrome is a kidney disorder characterized by excessive protein in the urine.

Observation:

• A young woman developed nephrotic syndrome while on lithium carbonate therapy.
• Her condition improved spontaneously one month after discontinuing lithium.
• The nephrotic syndrome recurred eight years later upon restarting lithium treatment.

Findings:

• Renal biopsy revealed minimal glomerular changes and no interstitial disease.
• This suggests a direct, reversible link between lithium carbonate and nephrotic syndrome.

Implications:

• Lithium therapy may induce nephrotic syndrome in susceptible individuals.
• Monitoring renal function is crucial for patients on long-term lithium treatment.
• This case highlights the importance of considering drug-induced nephropathies.