Roughly 7,000 rare diseases/disorders have been identified as affecting the human race. Because they are rare, it can be a real challenge for a person to be accurately diagnosed. Finding effective treatments, especially medicine, can also be a challenge—and for the same reason. Rareness.
This information is from the National Dissemination Center for Children with Disabilities (NICHCY).
It’s very helpful to read more about rare disorders. Following are links to additional information:
NICHCY Rare Disorders Resources
The National Dissemination Center for Children with Disabilities (NICHCY) offers links to several resources about rare disorders.