About Psoriasis Psoriasis is a non-contagious, chronic skin disease that comes in different forms and varying levels of severity.
Psoriatic arthritis is a form of joint disease that is similar to rheumatoid arthritis.
Psoriasis is usually a mild condition, and there are many treatments available to help manage its symptoms. The National Psoriasis Foundation has gathered the information in this section to help educate people about these complex diseases, including their appearance, symptoms and medical and social effects.