Psoriatic arthritis: improvement of skin symptoms. Infliximab improves skin symptoms in patients with psoriatic arthritis at week 16 (P < 0.001) and after crossover in the IMPACT 1 study. PASI, Psoriasis Area and Severity Index. Modified from .
Smolen and Emery Arthritis Research & Therapy 2011 13(Suppl 1):S2 doi:10.1186/1478-6354-13-S1-S2