Millions of Americans with psoriatic arthritis – a serious disease that causes pain, swelling and stiffness of the joints and tendons, and can result in joint damage if left untreated – struggle to get the health care and treatments they need to manage their condition. National Psoriasis Foundation plans to change that by launching the largest realignment and expansion of its psoriatic arthritis program since the organization began serving this community nearly 20 years ago. Want to read more? Subscribe to one of our monthly plans to continue reading this article.