There are five different types of psoriatic arthritis which include:
- Arthritis mainly in the small digits of the fingers or toes (55-70%)
- Asymmetrical arthritis in the joints of the extremities (30-50%)
- Symmectrical polyarthritis which can look like rheumatoid arthritis (15-70%)
- Arthritis mutilans: this is very rare, but can be very destructive to the joints (3-5%)
- Arthritis in the sacroiliac joints and the spine (5-33%)
Posteroanterior radiograph of the hands shows wrist fusion. Courtesy of Bruce M. Rothschild, MD.
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