What is epidermolysis bullosa (eb)? what causes it?

Skin disease: It's a congenital skin disease. The skin has two layers the epidermis and the dermis below. In this disease the proteins that anchor the two don't work well so they don't adhere well and detach easily. This results in blistering and chronic erosions. There are different types some more serious than others. Here is a link to learn more: http://www.ebkids.org