what causes butterfly disease
Dystrophic epidermolysis bullosa is an inherited variant affecting the skin and other organs. Butterfly children is the term given to those born with the disease, as their skin is seen to be as delicate and fragile as a butterfly's wings.Dystrophic epidermolysis bullosa is caused by genetic defects (or mutations) within the human COL7A1 gene encoding the protein type VII collagen (collagen VII).ystrophic epidermolysis bullosa is an inherited variant affecting the skin and other organs. Butterfly children is the term given to those born with the disease, as their skin is seen to be as delicate and fragile as a butterfly's wings.