system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do small open wounds and burns get itchy while healing?
gpt
Because the sensory nerves in the damaged area are still intact and able to transmit signals. 

At the same time there's a huge amount of cellular construction work going on as your tissues regenerate, and sometimes a nerve gets triggered by all the activity nearby enough to send a signal to the brain. 

It's like living in an apartment where the units above, below, and on either side of you are undergoing renovation. It might go mostly unnoticed, but every now and then someone will drop a hammer or leave a table saw running.