- Health.com, Amanda Gardner
- Arthritis Types
The 5 Types of Psoriatic Arthritis
Up to 30% of people with psoriasis will develop psoriatic arthritis, an autoimmune disease that can lead to pain, swelling, and stiffness in the joints. Psoriatic arthritis is generally divided into five subtypes, depending on which joints are affected and how many. But the system isn’t perfect. For instance, the five types don't take into accountsymptoms such as dactylitis (when the fingers and toes swell into sausages) and enthesitis(inflammation of areas near the tendons and ligaments).