anyone else have cleavage scarring?

When I was a freshman in high school puberty hit me really hard and I went from an A to a D cup.. I moved to Florida and was not used to the extreme heat and my cleavage would sweat horribly, and it would get really itchy because I have sensitive skin. Now that I'm used to the weather, I don't sweat so bad or itch anymore. Does anyone else have this scarring from something similar or know what to do for it?