Yes! This happened to me about 4 months after I started Humira, taking one shot every week. It kept getting worse, even getting zits all over my scalp and my chest. I stopped taking Humira about 2 months ago and my skin has mostly cleared up.
I had this problem with Remicade, too. My doctors said there was no way Remicade caused acne, but I think my skin is just sensitive and reacts to those drugs badly. I haven't talked to my doctor since I went of the Humira- bad, I know, but I feel pretty stuck because I will not go on either of those drugs again and have terrible and painful skin!