ELI5: Explain Like I'm 5

Phantom limb

Phantom limb is when someone who has lost all or part of an arm or leg, still feels like the limb is still there. It can feel like the limb is tingling, hurting, or that it is moving even though it doesn’t exist anymore. This can be very strange and even scary. Scientists aren’t sure why this happens and it can happen to anyone – even kids.