‘Did you even examine the patient?’ The dangers of dealing with difficult specialists

I’m going to work this morning. As such, I’ve been wondering who’s on call today.
Since I work in the emergency department, a lot of my day is spent calling specialists, either to admit patients or to manage complicated issues such as stroke, heart attack or trauma.
A quick glance at the call schedule sometimes gives me a little anxiety. Because certain names mean almost certain conflict.
I learnt about this in medical school and residency. I remember that a few residents or staff above me could make life exceedingly difficult.