Eidikology: proposition for a new terminology for the science of rare diseases

The European Union defines a disease as rare when it affects fewer than 5 per 10 000 persons, whereas the USA considers a condition rare if it affects fewer than 200 000 individuals. To date, however, there is no terminology to appropriately address these diseases as a category other than rare diseases, or in some instances orphan diseases when referring to conditions that lack the resources for treatment discovery. For more information click here.