Epidermolysis bullosa (EB) is a general term used to describe a group of rare inherited skin disorders that cause the skin to become very fragile.
There are many variants of these main types of EB, each with slightly different symptoms. So far, researchers have classified 27 variants of the condition and more may be identified in the future.
EB is caused by faulty genes. In most cases these are inherited from one or both parents but sometimes the fault occurs spontaneously.