ECD Awareness Week is September 8–14, 2025, and we need YOU to help raise awareness and show the world what it means to be part of the ECD family. Awareness Week is important because Erdheim-Chester Disease (ECD) is so rare that many people— even in the medical...
Erdheim-Chester Disease, also called ECD, is a very rare kind of blood cancer. It is so rare that some medical articles estimate that only about 2,000 cases around the world have been documented. Our bodies have special cells called histiocytes. Normally, these cells...