Clinical Trial Tests Stelara for Psoriatic Arthritis Relief Clinical Trial, Nationwide Clinical Research, Research Blog A+ A- Print Email Clinical Trial Tests Stelara for Psoriatic Arthritis Relief What is Psoriasis and Psoriatic Arthritis? As the name indicates, psoriatic arthritis, there is a link to psoriasis. About 15% of people who have psoriasis, a disease that causes the immune system to attack the skin, will develop psoriatic arthritis... Continue Reading