TMI -Anyone else?

Okay,so this is a little awkward for me to write about this subject publicly. Okay, so I am 18 years old & I suffer from butt acne. I've suffered from this since I was very very young. When I was in middle school & the first few years of high school was when it was at it's worst. It was absolutely terrible! It would literally get to the point that my butt cheeks were covered in pimples & they would be to the point that they would sometimes hurt to sit down on. Now that I'm a little bit older & out of the stresses I was under during most of my younger years, it isn't quite so bad. It's definitely still not blemish free & I still have some scarring from the past acne. Do any of you guys have any sort of advice,pointers for this kind of issue? & does anyone else suffer from this? (Including previously had this problem)