Systemic Inflammatory Response Syndrome Secondary to Nitrofurantoin

Area of Science:

• Pharmacology
• Infectious Diseases
• Critical Care Medicine

Background:

• Nitrofurantoin is a preferred antibiotic for acute uncomplicated cystitis, increasingly used due to resistance to other agents.
• Adverse effects are typically mild gastrointestinal issues, but severe systemic reactions are rarely reported.

Observation:

• A patient experienced recurrent episodes resembling systemic inflammatory response syndrome.
• These episodes were initially misdiagnosed as recurrent urinary tract infections.

Findings:

• The patient's severe systemic inflammatory response syndrome-like reactions were confirmed to be secondary to nitrofurantoin use.
• This highlights a potential, albeit rare, adverse effect of nitrofurantoin.

Implications:

• Clinicians should consider nitrofurantoin-induced systemic inflammatory response syndrome in patients with unexplained severe reactions.
• Accurate diagnosis is crucial to avoid complications and ensure appropriate management, potentially including antibiotic cessation.