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Pediatric Psoriatic Arthritis

What is psoriatic arthritis?

Psoriatic arthritis is a form of arthritis associated with psoriasis, a chronic skin and nail disease characterized by red, scaly rashes and thick, pitted fingernails. The disease is similar to rheumatoid arthritis in symptoms, characterized by joint inflammation. However, psoriatic arthritis tends to affect fewer joints than rheumatoid arthritis and does not produce the typical rheumatoid arthritis antibodies. The arthritis associated with psoriatic arthritis comes in five forms:

  • Arthritis that affects the small joints in the fingers and/or toes
  • Asymmetrical arthritis of the joints in the extremities
  • Symmetrical polyarthritis, a type of arthritis similar to rheumatoid arthritis
  • Arthritis mutilans, a rare type of arthritis that destroys and deforms joints
  • Psoriatic spondylitis, arthritis of the sacroiliac sac (in the lower back) and the spine

Psoriatic arthritis is one of four disorders which are classified as spondyloarthropathies. The other disorders are juvenile ankylosing spondylitis, inflammatory bowel disease, and Reiter's syndrome. These disorders have similar features such as:

  • Inflammation of the spine and sacroiliac joints
  • Family history of the disease
  • Similar nonarthritic symptoms
  • Absence of rheumatoid factor in the blood (an antibody found in the blood of most, but not all, people who have rheumatoid arthritis, as well as other rheumatic diseases)
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Children's Team

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Rheumatology

The Division of Rheumatology aims to improve the health and quality of life for children with rheumatic diseases and musculoskeletal disorders through comprehensive, patient-focused care, including testing, treatment, and patient and family education programs.

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