I must admit that having spent more time in hospital than is healthy (over 3 years as a surguical inpatient in 40 years), I have seen pain relief over used to keep distressed patients quiet and withheld to ensure compliance ("Just let me do procedure x on you Mr Jones and then you can have your painkillers"). Whilst everyone is allowed bad days, to do this smacks of unprofessionalism to me. Pain, whilst subjective, is very real and often more crippling both physically and mentally than more functional injuries. I have had difficulty when presenting with injuries that don't cause me much pain due to reduces sensation. This will often lead to me being triaged further down the scale than someone with the same injury and 'normal' sensation. Despite not being able to feel it, the damage is just as bad, if not worse. For example the injury that led to me losing my leg didn't hurt at all when I did it.