Phantom pain is the pain amputees feel in the place where they have lost a limb. Initially it is hard for some to grasp the fact that they have lost a limb, because they can feel intense pain where their limb was. There are methods to reorient the mind so that the pain goes away or is greatly reduced.
Also relates to the imagined pain a person feels when someone they love disappears from their life.
Sarge, I think I have been hit, I got this horrible pain in my left leg.
Don't worry private, it is only phantom pain you are feeling, we got your leg in a secure location, where no buddy can cause it harm.