Psoriatic arthritis is a type of arthritis that affects some people with psoriasis. Psoriatic arthritis might cause flare-ups or worsen your psoriasis symptoms. Psoriatic arthritis combines the swollen, sore joints of arthritis with psoriasis. Psoriasis typically causes itchy, scaly, or discolored patches to appear on the skin and scalp. About 8 million Americans have psoriasis—up […]
