There are around 7,000 known types of rare diseases and disorders.
According to Global Genes - a leading rare disease patient advocacy organization - there are around 7,000 types of rare diseases and disorders, and more are being uncovered every day.
In the United States, a disease or disorder is considered rare if it affects fewer than 200,000 people in the country at any given time, and it is estimated that 1 in 10 Americans are living with such conditions.
