Acute tubulointerstitial nephritis after wasp stings

Area of Science:

• Nephrology
• Toxicology
• Allergy & Immunology

Background:

• Acute renal failure (ARF) following insect stings is a recognized clinical concern.
• Typically, ARF is attributed to heme pigment-induced acute tubular necrosis from hemolysis or rhabdomyolysis.
• Wasp sting-associated renal injury is less commonly reported than bee sting-associated injury.

Observation:

• A 61-year-old man developed ARF after multiple wasp stings.
• Initial investigations excluded rhabdomyolysis and hemolysis as causes.
• Kidney biopsy confirmed acute allergic interstitial nephritis.

Findings:

• The patient required temporary dialysis but experienced complete renal function recovery after corticosteroid treatment.
• This case highlights a hypersensitivity reaction to wasp venom as the cause of ARF.
• The mechanism differs from the more common acute tubular necrosis pathway seen in sting-related renal failure.

Implications:

• Wasp venom hypersensitivity should be considered in the differential diagnosis of acute renal failure post-sting.
• Prompt recognition and appropriate anti-inflammatory treatment (e.g., steroids) may lead to favorable renal outcomes.
• Further research into venom-specific immunological mechanisms underlying renal injury is warranted.