Nazr on baby/child

That’s what I was wondering. First of all there is no way of confirming if something is nazr or just one of many challenges that life has to offer.
I mean think about those parents who have children diagnosed with fatal illnesses or conditions and see them in pain everyday. Are they supposed to think their child got nazr?

Yes nazr is mentioned in the Quran but so is the fact that as Muslims we will be tested in different ways and through out these challenges we need to be patient and only turn to Allah for help.