Ampicillin-induced interstitial nephritis with generalised exfoliative dermatitis

Area of Science:

• Nephrology
• Pharmacology
• Dermatology

Background:

• Drug-induced renal failure is a significant, preventable, and potentially fatal condition.
• Hypersensitivity reactions affecting the kidneys are known complications of penicillin-class antibiotics.
• Acute interstitial nephritis (AIN) is a less commonly reported adverse effect of ampicillin.

Observation:

• A case report details a patient experiencing AIN with renal failure and exfoliative dermatitis after ampicillin treatment.
• Diagnostic indicators included rapid-onset renal failure, eosinophilia, a skin rash, and characteristic renal biopsy findings.
• The patient's renal function eventually normalized.

Findings:

• Ampicillin administration was identified as the cause of acute interstitial nephritis and renal failure.
• The patient exhibited eosinophilia and a significant skin rash consistent with hypersensitivity.
• Renal biopsy confirmed the characteristic pathological changes of AIN.

Implications:

• This case highlights ampicillin as a potential cause of AIN, emphasizing the need for clinical vigilance.
• Prompt diagnosis and cessation of the offending drug are critical for managing drug-induced kidney injury.
• Persistent exfoliative dermatitis post-recovery underscores the potential for prolonged hypersensitivity manifestations.