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.

[Q]: A patient that received methadone for cancer-associated pain developed myoclonus as a side effect.
[A]: adverse drug event


[Q]: TEN is a disease of both children and adults, but TEN in early infancy is a rare event; only two well-documented cases in infants less than 6 months of age have been reported.
[A]: non-adverse drug event


[Q]: METHOD: The authors followed a patient with chronic HCV who received interferon and ribavirin and who developed hallucinations ultimately requiring psychiatric hospitalization.
[A]:
adverse drug event


