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: Iatrogenic hypercalcemia due to vitamin D3 ointment (1,24(OH)2D3) combined with thiazide diuretics in a case of psoriasis.

Answer: adverse drug event


Question: However, a large case-control study included three cases of either Stevens-Johnson syndrome or toxic epidermal necrolysis associated with ofloxacin use, but no details of the cases were given.

Answer: adverse drug event


Question: Histopathological features were also consistent with the disease.

Answer:
non-adverse drug event