I have these white bumps on my scrotum. They are pretty much like pimples with pus in them. They only show up on warm days and when I walk a lot throughout the day. I am using Calamine lotion at night and in a day they completely go away. They do not hurt, but it just feels like a rash. I work out a lot and have big thighs and pretty big testicles. I guess there is a lot of friction. What can I do for this?