Infliximab-induced psoriasis in treatment of Crohn's disease-associated ankylosing spondylitis: case report and review of 142 cases.

TNF-alpha inhibitors are used to treat numerous inflammatory conditions including rheumatoid arthritis and inflammatory bowel disease. Recent reports have illustrated the paradoxical development of psoriasis with TNF-alpha inhibitor therapy. We present here a review of 142 cases of new-onset psoriasis with infliximab, adalimumab, and etanercept therapy. This review illustrates the diverse conditions responsible for TNF-alpha-inhibitor induced psoriasis, the variable time prior to psoriasis development, and the most predominant forms of psoriasis. An analysis of the various therapeutic regimens applied may help provide guidelines for patient management.