When we think of a rare disease, we think of something unusual and at its extreme. Nonetheless, rare diseases are genetic in nature and could only affect a small percentage than the common diseases that can be found in some people. It suggests that there are problems with gene patterns or there are missing genes that causes abnormalities in some form that cannot be induced in any way since it happens so unusually. It is also called as orphan disease since there is a lesser availability of treatments. These are not really anticipated out of specified numbers of people who have it. Let us check this list then see what are the diseases that you have not yet heard before and how it begins to these people.