What is a Rare Disease?
February 28th is world Rare Disease Day! When I was diagnosed I didn't know MG was classified as a rare disease. Here are some answers I found to the questions I had about rare diseases from scholarly articles. What classifies as a rare disease? Simply put, very few people have been diagnosed with a specific type of disease i.e. Myasthenia Gravis. More scientifically, 1) A disease must have a prevalence of <200,000 persons in the U.S. 2) The Orphan Drug Act also defines diseases as “rare” if they affect more than 200,000 persons in the U.S. if “…there is no reasonable expectation that the cost of developing and making available in the U.S. a drug for such disease or condition will be recovered from sales in the U.S. of such drug.” Therefore the costs to making a cure/treatment of this disease would not be recuperated if they sold it in America. A disease like diabetes would therefore not be considered. How many rare diseases are there? It is est...