system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 why do we get a random itch at a certain point on our skin, and why does it go away completely from scratching it?
gpt
simply put, it is a trigger from your body to remove dead skin cells- assuming there is nothing there. If there's something there, say a bug, a bug bite, crabs, etc. then it's a trigger to remove that.