Lethal acantholytic erosive disorder

Lethal acantholytic erosive disorder (LAED), also known as lethal acantholytic epidermolysis bullosa, is an extremely rare and fatal form of epidermolysis bullosa simplex. This devastating genetic skin disorder is caused by mutations in the DSP gene, which encodes desmoplakin, a critical protein involved in cell-to-cell adhesion within desmosomes. The condition presents at birth (neonatally) with widespread skin erosions, severe blistering, and loss of skin integrity due to acantholysis — the breakdown of connections between skin cells. The skin is extremely fragile and separates easily with minimal trauma. The disorder primarily affects the integumentary system (skin), but because desmoplakin is also expressed in cardiac tissue and other epithelia, affected neonates may experience involvement of mucous membranes and potentially other organ systems. Key clinical features include generalized erosive skin lesions present from birth, universal alopecia (complete hair loss), nail dystrophy or absence of nails, and mucosal involvement. The skin fragility is profound and leads to extensive fluid loss, electrolyte imbalances, and high susceptibility to infection. Lethal acantholytic erosive disorder carries a very poor prognosis, with affected infants typically succumbing to the disease within the first days to weeks of life due to overwhelming sepsis, fluid and protein loss, or multiorgan failure. There is currently no curative treatment available. Management is entirely supportive and palliative, focusing on wound care, infection prevention, pain management, nutritional support, and maintaining fluid and electrolyte balance. Genetic counseling is essential for affected families.

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