This form of arthritis is usually caused by psoriatic lesions
, which are typical of patients with psoriasis. These injuries keep going back to the surface once the arthritis has begun. For clarity, the parts of the body on certain: if you have psoriasis of the nails, for example, you could develop arthritis in the hand. So basically, this form of arthritis that is usually near a body part, close to where the skin has been unleashed. On the bright side, outbreaks are usually mild and are not regular.