For me, it was not much of acne in my teenage years. However, when I turned 18, all of my acne came out of the window and I got extremely bad acne. And it continued to get worst all the way up until I got 25. So I had consistent 7 years of acne. My case was different because it happened when I got it at 18, not like normal people who usually get it in their early teens and by the end of teenage years, they get completely rid of their scars and pimples. As I got older it became more difficult to deal with and I got more embraced and more ashamed of how I used to look.