Except that’s not what got told to the ER. Kid had multiple stories. The doc says that. That is characteristic of those abusing an ER
Yes, but the fact remains that the differential diagnosis in that setting includes some serious life-threatening diagnoses, and it is crucial that you act professional in all settings when you are the physician. It just goes along with the job. Plus, it's very common for a patient to give conflicting stories, and leave out details. If you don't take everyone seriously, until proven otherwise, you will get burned at some point - and when docs get burned someone often dies.
It's also the characteristic of kids that don't know how to articulate medical problems in a cogent fashion.
You obviously have a bad case of whatever the ER doc has; you think your assumptions are as good as due diligence.