Only about 1 in 5 people with psoriasis will develop psoriatic arthritis. Scientists haven’t known why the painful joint condition gets triggered in some and not others. But clues to how it travels through the bloodstream may lead to prevention….

Psoriasis manifests as scaly, red and itchy skin, but is far more than just skin-deep. It can cause unseen damage, affecting the joints, blood pressure and heart health. Now there’s an answer for the stomach problems…