Up to 8 percent of people who have psoriasis (a skin condition that is characterized by scaling and swelling) develop psoriatic arthritis. When a person develops this, the joints (and sometimes other areas of the body) become inflamed. Some other symptoms of this condition include low back pain or neck pain; pitting, thickened, and discolored toenails or fingernails; and eye pain and redness.
Although research scientists do not know the exact cause or causes of this type of arthritis, they believe that the condition is caused by a combination of environmental, genetic, and immune system factors. Treating this disorder can involve lifestyle changes, medications, and routine monitoring and ongoing care.
(Click Psoriatic Arthritis for the full eMedTV article on this topic. This article provides more detail about psoriatic arthritis symptoms and treatment options, as well as some risk factors for the condition. You can also click on any of the links in the box to the right for more specific information.)