title: Multiple adverse effects of pyridium: a case report.
abstract: Pyridium (phenazopyridine hydrochloride) is often prescribed as an analgesic in patients following trauma, surgery, or infections of the urinary tract. Pyridium toxicity has been previously reported, however, most cases result in a single adverse effect. Herein the authors describe an elderly patient who presented with simultaneous multiple adverse effects, including a previously undocumented myelosuppressive pancytopenia.
authors.affiliation: Forum Health - Family Practice Center, 500 Gypsy Lane, Youngstown, OH 44501, USA. charleshaigh@earthlink.net
authors.forename: Charles
authors.initials: C
authors.lastname: Haigh
authors.forename: James C
authors.initials: JC
authors.lastname: Dewar
mesh_terms: D000369:Aged, 80 and over; D000779:Anesthetics, Local / Q000009:adverse effects* / Q000627:therapeutic use; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D010198:Pancytopenia / Q000139:chemically induced* / Q000473:pathology; D010621:Phenazopyridine / Q000009:adverse effects* / Q000627:therapeutic use; D012867:Skin / Q000473:pathology; D014555:Urination Disorders / Q000188:drug therapy
chemical_list: D000779:Anesthetics, Local; D010621:Phenazopyridine