Acquired dermis elastic tissue disorder

Acquired dermis elastic tissue disorders (also known as acquired disorders of dermal elastic tissue) are a group of rare skin conditions characterized by abnormal changes in the elastic fibers of the dermis — the middle layer of the skin. Unlike inherited connective tissue disorders, these conditions develop during a person's lifetime rather than being present from birth. The group encompasses several distinct entities including anetoderma (macular atrophy), mid-dermal elastolysis, acquired cutis laxa, and elastosis perforans serpiginosa, among others. These conditions share the common feature of degradation, loss, or abnormal accumulation of elastic tissue in the skin. Clinically, patients may present with localized or widespread areas of loose, wrinkled, or sagging skin, papular or plaque-like lesions, or areas of skin that herniate or pouch outward due to loss of elastic support. The skin is the primary organ system affected, though in some subtypes (particularly acquired cutis laxa), internal organs with elastic tissue components — such as the lungs and blood vessels — may also be involved. Symptoms vary depending on the specific subtype but commonly include cosmetic disfigurement, skin laxity, and in some cases functional impairment. Treatment options are limited and largely supportive. Management focuses on addressing the underlying cause when identifiable (such as an inflammatory or autoimmune trigger), cosmetic improvement, and monitoring for systemic involvement. Some patients may benefit from anti-inflammatory therapies, and surgical correction may be considered for severe skin laxity. There is currently no cure for these conditions, and the clinical course varies widely depending on the specific subtype and extent of involvement.

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