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.

[EX Q]: However, we have recently had four cases of clofibrate-induced myopathy in patients with diabetes insipidus due to hypothalamic lesions.
[EX A]: adverse drug event

[EX Q]: Although radiation-induced laryngeal necrosis has become a rare complication, the combination of chemotherapy and radiation therapy may increase its incidence.
[EX A]: non-adverse drug event

[EX Q]: He had experienced subarachnoid hemorrhage (SAH) from a left vertebral dissecting aneurysm, and had subsequently received a ventriculoperitoneal shunt against post-SAH hydrocephalus.
[EX A]:
non-adverse drug event