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: Such anagen effluvium with lichenoid eruption following INH therapy has not been observed previously.

A: adverse drug event
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Q: Reversible findings of restricted diffusion in 5-fluorouracil neurotoxicity.

A: adverse drug event
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Q: Recognition of a potential drug-induced Fanconi syndrome is important when managing pediatric oncology patients previously treated with ifosfamide.

A:
adverse drug event
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