acne can start as soon as hormones begin to change in a person..as early as 10 years old...the average age would be about 12.
it can last forever..or, it can stop in late teens...its very much hereditary..if your parents have good skin, chances are you will too...if they had acne problems - that can be passed on to you...some people, like me always had good skin until my 30s then all the sudden it started breaking out...but that was 99% stress related..
Acne, is different from the occasional breakout...those, are normal- acne is much worse then occasional.
Talk to your parents and find out what they dealt with...and if you are starting to have problems, see if you can get to a dermatolgoist- the sooner you deal with it, the better it will be.
