Background: Nephrotic syndrome and type 1 diabetes mellitus are two common chronic conditions in children.
Co-existence of these conditions is an extremely rare finding.
Case presentation: This report presents a 6-year-old boy who was diagnosed with nephrotic syndrome five
years ago and type 1 diabetes mellitus in infancy. Renal biopsy showed membranous glomerulonephritis, which
is a rare histopathology underlying nephrotic syndrome in children.
Conclusion: Co-existence of nephrotic syndrome and type 1 diabetes mellitus may suggest a mutual immunological
basis for both conditions.