If you search the net for side-effects of anabolic androgenic Steroids (AAS) you will find many different opinions on the cause. And mostly you’ll find the pictures of this young (21) bodybuilder. Mostly used by offenders of steroid use.
In the countless threads on the discussion boards you can find a lot of bro-science. Like: “Acne is primarily genetically based -- some get it on back and shoulders, some get on the face, 
some don’t get anything -- you don't just get acne from aas -- I have never had so much as a pimple from taking anything. Yet my back was covered at one point in high school when I was 100% drug free--Your reading too much about the dangers of aas --I've never gotten acne, lost hair, gyno -- Never had any of that and the vast majority of users I know don't really either give or take some occasional acne. “
There also exist many discussions on pro-bodybuilders using enormous amounts of gear without any acne. Visible acne that is. Well most guys know that pictures a modified. Not only those of models and Playboy bunnies, but also the pictures of bodybuilders in the magazine, PhotoShop, you know.. Still it’s not hard to find pics of pro-bodybuilders covered with acne. Here I posted a picture of Dennis Wolf, but also Dorian Yates and others are not too hard to find.
What once happened with the use of anabolic steroids now happens with growth hormone. Let me explain. When steroids where developed many scientists and pharmaceutical companies where convinced that modifications on the parent hormones would lead to favorable medication. In the golden era of steroid synthesis the main goal was to synthesize a compound which retained a high degree of anabolic activity coupled with a vastly diminished androgenic activity. In those days anabolic steroids where meant to be given to patients, to the old, the weak, the recovering, the undernourished etc. It was thought that through all these modifications one could create steroids that would serve many different purposes. Quite like nowadays many people think about recombinant human Growth Hormone. What followed was a pure demonization of anabolic steroids, the pharmaceutical companies unable to reach their goals exaggerated the side-effects just as other governmental institutions ..and the official media followed blindly. The bodybuilding community mistrusted the official medical research and was light-years ahead of official research. Some studies made such foolish assumptions that it made Will Brink in 1996 to write his classic article “walking the walk, or talking the talk” An article that said what most of us thought.