Psoriasis-related juvenile idiopathic arthritis

A rare pediatric inflammatory rheumatic disease characterized by the presence of arthritis accompanied by either psoriasis or at least two of the following supporting features; presence of nail pitting, onycholysis, dactylitis, or a family history of psoriasis in a first degree relative. Patients are younger than 16 years of age and the disease lasts longer than 6 weeks.