Psoriatic arthritis is a type of arthritis that often occurs with psoriasis of the skin.The Causes, incidence, and risk factors are follows:
- Psoriasis is a common, chronic skin condition that causes scaly patches on the body. About 1 in 30 people with psoriasis will develop arthritis with the skin condition. In most cases, psoriasis comes before the arthritis.
- The cause of psoriatic arthritis is not known, but genes may play a role. In general, people who have psoriasis have a higher rate of arthritis than the general population.