ICD·index Chapters ENESDE
4A41.10 category

Juvenile polymyositis

Definition

Juvenile polymyositis is a rare childhood idiopathic inflammatory myopathy. It is frequently misdiagnosed, as it lacks a unique clinical phenotype. Traditionally, it presents with weakness of the proximal muscles that evolves over weeks to months. The primary histologic features are fibre size variability, scattered necrotic and regenerating fibres, and perivascular and endomysial cellular infiltrates.

Exclusions

Also indexed as

Juvenile polymyositisJuvenile polymyositis with PM-Scl auto-antibodyJuvenile polymyositis with anti-synthetase auto-antibodyJuvenile polymyositis with interstitial lung diseaseJuvenile polymyositis with overlap to non-organ specific systemic autoimmune disorderJuvenile polymyositis, necrotisingJuvenile polymyositis, paraneoplastic

Nearby in Polymyositis