What did prescribe for treatment? Isotretinoin? Topical Antibiotic? That is unfortunate glad you caught it fast..
Acutane - 80mgs a day followed by 40mgs a day for a follow up. I might add that I had the dose changed (lowered) because I thought it was too much. My skin was so dry and it cracked and was uncomfortable. My lips, eyes, and the surrounding areas around the worse areas on my chest were always dry.
Topical gel (Erythromycin) - as needed
It took a year to recover to where you couldn't really notice anything with my shirt off. Also something else I might add in is that I have spoken with a couple of people that had this type of acne and how they controled the issue. Almost all of the guys used acutane and many ended up having to control estrogen a little more aggresively than most would while on HRT and it really helped. Chris Cook was one that I talked to and he mentioned how bad it would get on the backs of his arms and shoulders but ended up getting it taken care of. Acne is kind of the unspoken problem that nobody talks about when people bring up AAS because of the stigma that follows it around. People just assume you are taking everything under the kitchen sink and thats just not the case. What I found that helps is this........
Stop the problem before it starts by cleaning your skin with something that will also remove the dead layer of skin every time you shower. I use a Neutrogena skin care product that has something to exfoliate. I also use a sea sponge which I found helps for some reason.
Limit androgen use if possible and lean towards items with less of an androgenic edge so to speak. I'm not trying to get overly scientific but I have found a good ratio of androgens to less androgenic compounds helps big time and for me that number is around a 40/60 ratio.
Use a decent anti estrogen and get blood work done. I have found that I am very sensitive to androgens and because of this my blood plasma levels rise pretty high off of a small amount of whatever the MD is prescribing. Because of this, my skin will get extra oily. However, there is a point where I can get very good gains and not really deal with any skin issues but once I go over that number (ng/dl test readings) my skin seems to fight back. Everything you take will effect that number to some degree so you need to take that into consideration. That is a good thing in my opinion because you can take a lot less of something and still get very good gains. It is also much easier on your internal organs, lipids, and overall health.
A diet rich in EFAs (which is a good idea anyway) helps me personaly. I have stayed away from excess carbs and my body seems to respond better to a higher fat diet and this has helped my skin too.
With anything you do that alters your body chemistry it is a roll of the dice in many cases. Even if you take the precautions that most do you can still end up with health problems. You have to listen to your body and know when you might be fighting a losing battle. I sort of look at it this way....If your body is letting you know that what you are doing is hurting it, why keep doing it? Is it because you don't want to shrink up and lose muscle? Forget that madness because in my opinion sacrificing your health for a larger than normal physique is just not worth it.