Abstract
CASE: Drug-induced fever is a rare adverse reaction to antibiotics. This case report describes 2 cases of suspected rifampicin-induced fever in patients undergoing periprosthetic joint infection treatment. Both patients experienced fever with the absence of inflammatory symptoms and a discrepancy between clinical improvement and persistent fever. Discontinuation of rifampicin led to rapid symptom resolution. CONCLUSION: Drug-induced fever should be considered when fever persists without infectious symptoms and after excluding other causes. Prompt recognition and discontinuation can lead to rapid resolution and minimize unnecessary interventions.