Calcinosis is a common complication of juvenile dermatomyositis, which can lead to extensive impairment of activities of daily living when it occursover the joints and limits or completely restricts movement.1 Lesions appear as hard nodules, commonly over bony prominences.1,2 Thesecalcifications occur in 10% to 40% of patients with juvenile dermatomyositis but are unusual in adults.2
Weinel S, Callen JP. Calcinosis Cutis Complicating Adult-Onset Dermatomyositis. Arch Dermatol. 2004;140(3):365–366. doi:10.1001/archderm.140.3.365
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