Juvenile overlap myositis

Definition

A rare juvenile idiopathic inflammatory myopathy characterized by the association of inflammatory myositis (manifesting with acral erythema, progressive weakness of the limbs, pain, general fatigue, moodiness or crankiness) with clinical and/or laboratory features of other autoimmune diseases (e.g. systemic lupus erythematosus, localized scleroderma, diabetes). Cardiac involvement has been reported in some patients.