mine is genetic too, it's the worst kind!
and I have been to a dermatologist, I was under treatment for years, it kept making my acne wrose, but it was supposed to first get all the stuff out of my skin then it would be better. but seriously for YEARS?? so I stopped, then I had HORRIBLE skin for a moment, but now it's calmed down. it's still not perfect though and it never will be. but the main reason why I stopped the dermatological treatment was because it damged my skin. it still hasn't completely recovered, it gets red every time it gets a little cold etc.