An orphan or rare disease is generally considered to have a prevalence of less than 5% affected individuals in the society. Certain diseases with more than 5% affected individuals are included, but subpopulations of these conditions may be less than the prevalence standard for rare disease.
See also List of common diseases.
This list of rare diseases was originally taken from the NIH public domain resource at http://ord.aspensys.com/diseases.asp. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
See also: orphan drugs.
