Juvenile idiopathic arthritis Learning Hub

Juvenile psoriatic arthritis

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Juvenile psoriatic arthritis is one type of juvenile idiopathic arthritis. Learn about the symptoms and possible complications of this condition.

Key points

  • Juvenile psoriatic arthritis is diagnosed in children or adolescents with arthritis AND psoriasis, or a family history of psoriasis, and features of psoriasis, including nail changes and characteristic swelling in the fingers and toes.
  • Psoriasis is a scaly, red rash, which can appear on the scalp, behind the ears, on the eyelids, elbows, knees, buttocks or inside the belly button.
  • Psoriatic arthritis affects 3% to 10% of children with juvenile idiopathic arthritis (JIA).
  • It may resolve during childhood or last into adulthood.

Juvenile psoriatic arthritis is diagnosed in children or adolescents with arthritis AND either psoriasis or two of the following symptoms:

  • typical nail changes seen in psoriasis called nail pits (little dents in the fingernails and/or toenails)
  • dactylitis (sausage-like welling of the fingers and/or toes)
  • a first-degree family member (parent or sibling) with psoriasis

Psoriasis is a skin disease. It is a scaly, red rash that can develop on the scalp, behind the ears, on the eyelids, elbows, knees or buttocks, or inside the belly button. Some people with psoriasis may also develop nail pits (tiny dents in their fingernails and toenails).

In children with juvenile psoriatic arthritis, the psoriasis may start before the arthritis, or the arthritis may develop before the psoriasis. A family history of psoriasis is an important clue to the correct diagnosis.

Psoriatic arthritis Identification of finger, hip and toe joints and illustrations of psoriatic rash, nail splitting and dactylitis
Psoriatic arthritis affects both males and females equally. It is characterized by nail pitting, swollen fingers or toes, soreness in any joint, and red scaly rash.

Quick facts about juvenile psoriatic arthritis

Here are a few more things you should know about juvenile psoriatic arthritis:

  • It occurs in 3% to 10% of young people who have JIA.
  • It can occur at any age.
  • It affects both males and females equally.
  • It can affect a few or many joints.
  • It may involve the hips or back, similar to enthesitis-related arthritis.
  • When the tendons of the fingers or toes become swollen or inflamed, they may look like sausages. This is called dactylitis.
  • Psoriasis may cause little dents in the fingernails and toenails called nail pits.
  • There is a moderate risk of eye disease, called uveitis.

Some children and adolescents have relatively mild psoriatic arthritis, and others have a more severe form. For some, it may resolve during childhood, and for others, it may persist into adulthood.

Last updated: May 21st 2024