"Where does it hurt"? he asked.
"Mostly in the space between the back of my head and whatever is behind me".
The look of concern increased.
"Not ON your head"?
"No, the space behind me".
A pain existing in the invisible mass trailing in my wake. In front - no pain. Behind - pain.
The further the distance between me and whatever lies behind me, the greater the pain.
I knew a man once whose pain lived in all that lay before him. That sounds bad.
"Take this prescription and come back in a month".
"Will it work"?
"I don't know".