Fatal adverse drug reaction to trimethoprim.
BACKGROUND
Trimethoprim is the antibiotic of choice for treating uncomplicated community acquired urinary tract infections. However, before prescribing any drug it is vital to obtain a detailed drug history to exclude possible drug allergy.


OBJECTIVE
We present the case of a fatal adverse drug reaction due to trimethoprim. We discuss some of the problems that led to the patient's death, and consider how to prevent similar events.


CONCLUSIONS
Re-exposing a patient to a drug suspected of causing an adverse reaction is associated with considerable risk of morbidity and mortality. A detailed history is vital to correctly diagnose drug allergies but, even so, it is not always possible to identify the causative agent. Following an adverse drug reaction, health professionals must take appropriate steps to avoid inadvertently re-prescribing the culprit drug. This is essential to avoid the tragic outcome highlighted in this case.
Mortimer
Neil J
NJ
Department of Dermatology, Leicester Royal Infirmary, United Kingdom.
Bermingham
Mark R
MR
Chapple
Sarah J
SJ
Sladden
Michael J
MJ
D000368:Aged; D000892:Anti-Infective Agents, Urinary / Q000009:adverse effects; D004342:Drug Hypersensitivity / Q000150:complications* / Q000175:diagnosis* / Q000209:etiology; D017809:Fatal Outcome; D006801:Humans; D008297:Male; D013262:Stevens-Johnson Syndrome / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D014295:Trimethoprim / Q000009:adverse effects*; D014552:Urinary Tract Infections / Q000188:drug therapy
D000892:Anti-Infective Agents, Urinary; D014295:Trimethoprim