Dermatomyositis is a rare acquired immune-mediated muscle disease characterized by muscle weakness and skin rash. It is classified as one of the idiopathic inflammatory myopathies (IIM). Although all idiopathic inflammatory myopathies share the common presentation of muscle weakness, they differ clinically in terms of muscle groups involved and histopathological findings. Dermatomyositis presents with characteristic skin findings and symmetric proximal skeletal muscle weakness.

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