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.
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Question: Interstitial fibrosis of the lung is a potential complication of methotrexate therapy for psoriasis.

Answer: adverse drug event


Question: The child developed the nephrotic syndrome at the age of 17 months.

Answer: non-adverse drug event


Question: We presented a patient with status asthmaticus treated with a combination of theophylline and prednisone who developed a perforated gastric ulcer.

Answer:
adverse drug event