What is the association with psoriasis of the skin?
People with psoriatic arthritis usually have some skin signs eventually.
Psoriatic arthritis develops after skin psoriasis in approximately 70% of patients. Remaining patients have either a simultaneous onset of skin and joint psoriasis or joint symptoms precede any skin problem. The severity of the skin diseases does not predict the severity of the joint disease.
Plaque psoriasis is the most common form of skin psoriasis seen with psoriatic arthritis. Joint symptoms may flare with a flare in skin psoriasis but quite commonly the skin symptoms behave independently of joint symptoms. Most people with psoriatic arthritis have mild psoriasis.
