Dermatomyositis is a rare progressive autoimmune disease characterized by inflammatory myopathy that classically manifests several characteristic cutaneous findings, such as Gottron’s papules, periorbital heliotrope rashes, poikiloderma, and reticular telangiectasis. However, there exist a wide variety of atypical cutaneous features in dermatomyositis. We describe a case of bullous DM with preceding adenocarcinoma of the lung in a 62-year old woman. To our knowledge, this is the 2nd report in the Korean literature of a bullous eruption in dermatomyositis.