Epidermolysis bullosa (EB) is a group of rare genetic skin conditions that cause the skin to blister in response to minor injury, heat, or friction from rubbing or scratching. Genetic conditions are inherited. They are caused by faulty genes that run in the family. Most types of epidermolysis bullosa initially affect infants and young children. Some people with mild forms of the condition do not develop signs and symptoms until adolescence or early adulthood.
