This disorder is usually found on the feet or hands, but has been known to affect people on other areas of the body. This type causes swelling in the hands, feet, and in the large joints of the ankles, knees, hips, elbows, and the spine. Joint pain and stiffness accompanies this psoriasis. Joint damage has been known to occur if treatment is not applied. The symptoms of this disorder are inflammation of the scalp, lesions covered with scales, and elevated skin surfaces.
Nail psoriasis affects both fingernails and toenails.
The nails can become yellow in color and thick. The nails can develop a brittleness and the skin surrounding the nails can become inflamed. Nails can become detached from the toe or finger. Psoriasis is not contagious. There is no danger of passing to other people.