Risk Factors For Psoriatic Arthritis

Having psoriasis is the single greatest risk factor for psoriatic arthritis. Other risk factors include:
Heredity. Nearly half of people with psoriatic arthritis have a close relative with the disease.
Age. Although anyone can develop psoriatic arthritis, it occurs most often in adults between the ages of 30 and 50.
Race. Caucasians are more likely to develop psoriatic arthritis than are people of other races.
Sex. In general, psoriatic arthritis affects men and women equally, but DIP and spondylitis are more likely to affect men, whereas symmetric arthritis occurs more often in women.
HIV infection. Psoriatic arthritis seems to occur more often among people who are HIV-positive than among those who are HIV-negative. HIV infection may also exacerbate existing psoriasis.