Child health · UKMLA & AKT
Psoriatic juvenile idiopathic arthritis
A free high-yield preview for the UKMLA Applied Knowledge Test, covering how to recognise this condition. The full SA Note notes add investigations, management and complications, with practice questions on this topic.
Key high-yield points
- One of seven ILAR JIA subtypes - accounts for ~5-8% of all JIA cases
- Defined by arthritis + psoriasis, OR arthritis + characteristic extra-articular features when psoriasis is absent
- Bimodal age distribution: early peak 2-3 years (girls, oligoarticular); later peak mid-childhood to adolescence (equal sex, polyarticular)
- Joint disease commonly precedes psoriasis by months to years - do not exclude diagnosis on absence of skin plaques alone
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