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Anetoderma

Background

Anetoderma (anetos, Greek for slack) is a benign condition with focal loss of dermal elastic tissue, resulting in localized areas of flaccid or herniated saclike skin. The condition has been reported under various names, including macular atrophy, anetoderma maculosa, and atrophia maculosa cutis. Primary lesions consist of localized areas of flaccid skin, which can be macular, papular, or depressed. 

Historically, idiopathic lesions were classified based on a clinically inflammatory (Jadassohn-Pellizzari) or noninflammatory (Schweninger-Buzzi) onset. However, both types of lesions may be found in the same individual, and they are histologically similar. Currently, anetoderma is classified as either primary anetoderma, which is an idiopathic occurrence of atrophic lesions in areas of skin that appear normal prior to the onset of atrophy, or secondary anetoderma, which is preceded by an inflammatory, autoimmune, infectious, or neoplastic process. Both types may be associated with systemic diseases. A familial form that manifests as primary anetoderma has also been described.

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