What Causes Red Discoloration Of Skin?

Hi Doctor,
I am a 24 year old male. I recently fasted for 3 days only taking water. It ended today 11th FEbraury when i took carrot juice to break the fast. But on the second day only ie. on 9th feb my skin was turning red. And on 10th feb and on 11th feb my arms are comlete red. What could have caused it. Do i need any medicine or its just the body removing toxins.... ?

Thanks for help.

yours thankfully
Robin Suri
email : YYYY@YYYY