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: A patient that received methadone for cancer-associated pain developed myoclonus as a side effect.

SOLUTION: adverse drug event

PROBLEM: We describe two patients with aspergillus arthritis of the knee joint following fludarabine-based non-myeloablative stem cell transplantation.

SOLUTION: adverse drug event

PROBLEM: On discontinuation of the drug, serum CK concentrations returned to normal within eight days.

SOLUTION:
non-adverse drug event