NORD’s Physician Guides is a free service of the National Organization for Rare Disorders (NORD)
and its medical advisors.
NORD’s Rare Disease Database provides brief introductions for patients and their families to more
than 1,200 rare diseases. This is not a comprehensive database since there are nearly 7,000 diseases
considered rare in the U.S. We add new topics as we are able to do so, with the help of rare disease
If you are seeking information about a rare disease that is not in this database, we would suggest
contacting the Genetic and Rare Diseases Information Center (GARD) at the National Institutes of
Health. NIH has the most complete database of rare diseases in the U.S.
Representatives of patient organizations whose medical advisors are interested in assisting NORD in
creating a report on a disease not currently covered in this database may write to orphan@raredis-