You cannot identify with physical pain. It is experienced as a persistent companion, somehow just to the side of where you are. It has no will or intentionality, is not personified or even personal, and yet it is intimate and deeply isolating. It seizes hold of your attention, is pure sensation but apart from certain synaesthesias, colour, shape, sharp or dull quality etc., it does not register as a perception since it has no objective quality of being. You could draw a picture of it in relation to a body image but only as a sort of fictional representation. It is purely present and forces awareness into the present, elongating time into a pure ordeal. You cannot imagine an end to it other than complete oblivion.