This summer for the first time the skin in the underside of my penis head becomes very red and rough after going swimming. It doesn’t cause any pain and there are no other symptoms. It doesn’t hurt during sex either. I am a circumcised 39 male in a monogamous cis sexually active marriage. No other symptoms, and negative for any STI, nor there are any concerns. My spouse doesn’t have any symptoms. It goes away after a few days and treating it with petroleum jelly. But after going to any pool it will return. Could I have developed an allergy to pool chemicals? Could it be some sort of infection (fungal or parasitic)? Has anyone experienced this ?