I was on the verge of a bad flare-up a couple weeks ago but was saved by my remicade infusion. However, as I was beginning to flare up, I broke out A LOT (and I'm already on acne medication). I have noticed a similar pattern, but as you pointed out, it could just be due from stress of an impending flare up.
However, I also have very bad skin issues, aside from acne, due the Crohn's (well, according to my GI. My dermatologist disagrees completely...hm). I developed sores on my arms and neck before Thanksgiving that still haven't cleared up, and this did align with my feelings of a flare up. I think some of us just get hit harder with the skin stuff than others.
Hope you're feeling better this week!
19, College Student, just diagnosed June 2007