title: Pyelonephritis following phenazopyridine use.
abstract: We present a case of pyelonephritis following the extended andsolitary use of over-the-counter phenazopyridine in a forty-year-oldfemale. The patient initially had uncomplicated cystitis signs andsymptoms which partially resolved with phenazopyridine and therefore she continued use. She presented to the emergency department with systemicsigns and symptoms of acute pyelonephritis. As phenazopyridine is devoidof antibacterial properties this allowed the lower urinary tractinfection to progress to acute pyelonephritis requiring intravenousantibiotics. Better patient education may preclude this complication.
authors.affiliation: Department of Emergency Medicine Keck School of Medicine, University of Southern California, 1975 Zonal Avenue, KAM 100F, Los Angeles, CA 90033, United States. Electronic address: spnordt@hotmail.com.
authors.forename: Sean Patrick
authors.initials: SP
authors.lastname: Nordt
mesh_terms: D000328:Adult; D000779:Anesthetics, Local / Q000009:adverse effects / Q000627:therapeutic use*; D000900:Anti-Bacterial Agents / Q000627:therapeutic use*; D003556:Cystitis / Q000188:drug therapy* / Q000523:psychology; D018450:Disease Progression; D005260:Female; D006801:Humans; D010353:Patient Education as Topic; D010621:Phenazopyridine / Q000009:adverse effects / Q000627:therapeutic use*; D011704:Pyelonephritis / Q000139:chemically induced*
chemical_list: D000779:Anesthetics, Local; D000900:Anti-Bacterial Agents; D010621:Phenazopyridine