Hi, my son is 5 years old and I noticed a few days ago that his penis was very red and dry at the tip and around it, today it got worse as the the bottom part of it is getting red with the some red bumps, under the shaft and testicles, I think he s feeling a bit itchy too. he s went swimming for a few days last week and I m thinking that it could be from the chlorine, what is it and what can I do, cetaphil didn t help ?