TASK DEFINITION: Adverse drug reactions are appreciably harmful or unpleasant reactions resulting from an intervention related to the use of medical products, which predicts hazard from future administration and warrants prevention or specific treatment, or alteration of the dosage regimen, or withdrawal of the product. Given medical case reports extracted from MEDLINE, the task is to classify whether the case report mentions the presence of any adverse drug reaction. Classify your answers into non-adverse drug event and adverse drug event.
PROBLEM: We present a case of accidental injection of tranexamic acid instead of bupivacaine during spinal anesthesia.

SOLUTION: non-adverse drug event

PROBLEM: Peritonsillar bupivacaine infiltration, a relatively safe method of pain control, is in some centers frequently used by otolaryngologists for pain relief.

SOLUTION: non-adverse drug event

PROBLEM: OBJECTIVE: The purpose of this study was to report the concomitant occurrence of multiple squamous cell carcinomas and diffuse nail hyperpigmentation associated with hydroxyurea treatment, and to describe a successful therapeutic approach using imiquimod 5%.

SOLUTION:
adverse drug event

