Transient Bullous Dermolysis of the Newborn

A rare subtype of dystrophic epidermolysis bullosa characterised by generalised blistering at birth that usually regresses within the first 6 to 24 months of life. Less than 30 cases have been reported to date. The disease usually manifests at birth. Skin blisters generally affect the whole body. Blisters can also affect the oral cavity. Disease activity usually ceases within the first 6 to 24 months of life. However, nail dystrophy and some degree of skin fragility can persist in adulthood. Caused by mutations within the type VII collagen gene (COL7A1). Mutations in this gene lead to reduced amounts or an alteration in function of collagen VII. The condition is usually inherited in an autosomal dominant manner, but can also rarely be transmitted as an autosomal recessive trait.