i got out of my friends pool and then under both of my armpits i had this bumpy burning redish rash type thing

Question

what can it be

Answer 1

Allergy to chlorine. It must be too strong. It is like a chemical burn. Shower immediately Rinse off all the chemical. Think hard, did you smell a lot of chlorine bleach?

Answer 2

sensitivity to the chlorine in the pool. Your underarm skin is more sensitive than other parts of the body, especially if you just shaved recently.