Pain can upend every aspect of our lives, but there's a field of psychology that can help. Learn More.
Psoriatic arthritis (PsA) is a form of inflammatory arthritis. It affects about 1 million people in the United States, or 30% of people who have psoriasis. Psoriasis is a skin disease that causes a red, scaly rash, most often on your elbows, knees, ankles, feet, and hands.