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]: CASE SUMMARY: A 61-year-old woman with no apparent risk factors for liver injury developed acute hepatitis one week after the final dose of a long-term course of pulse itraconazole therapy (200 mg orally twice daily, 1 wk on, 3 wk off, for 24 wk) for onychomycosis.
[A]: adverse drug event


[Q]: Spontaneous regression of the lesions was noted after discontinuation of the treatment.
[A]: non-adverse drug event


[Q]: This ubiquitous inhabitant of the sebaceous glands and hair follicles can cause acne vulgaris.
[A]:
non-adverse drug event