Thank you for the reply, I was a little worried that people would think the question too unpleasant and just downvote to oblivion!

I was trying to think of explanations for the apparent callous nature of the emergency doctor who tried to discharge him from A&E and the nurses who gave equally brusk treatment. The first thing that came to mind was that they treated him effectively as a self-inflicted "slow" suicide case and it must be some ethical resource allocation issue. ie. hypothetically "Why am I treating this self-inflicted injury when there's a kid in the next ward who's been hit by a car and needs 24/7 monitoring"