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.

Example Input: After the dose of methylprednisolone was reduced from 40 mg to 20 mg i.v. q6h and shifted to other anti-asthma treatment by procaterol metered dose inhaler via spacer, the psychotic reaction disappeared a few hours later.
Example Output: adverse drug event

Example Input: PURPOSE: Symptomatic visual field constriction thought to be associated with vigabatrin has been reported.
Example Output: adverse drug event

Example Input: We report a case of hyperpigmentation due to bleomycin treatment in a patient with acquired immune deficiency syndrome (AIDS).
Example Output:
adverse drug event