WeArePsoriasis.org - The Social Support Network for People Living with Psoriasis

Eric Ruderman, MD, Answers Critical Questions About Psoriatic Arthritis Eric Ruderman, MD, is an associate professor of medicine in the division of rheumatology at Northwestern University's Feinberg School of Medicine. Q: What is psoriatic arthritis? A: Psoriatic arthritis is a type of inflammatory arthritis that can occur in people who have psoriasis. It can include anything from arthritis of the small joints of the hands to inflammatory arthritis of the spine to Achilles tendinitis. About 30% of people with psoriasis will develop psoriatic arthritis, and it usually appears 5 to 10 years after the psoriasis...