MDS, or Myelodysplastic Syndromes, is a group of disorders caused by poorly formed or dysfunctional blood cells. It occurs when the bone marrow, which produces blood cells, does not function properly, leading to a shortage of healthy red blood cells, white blood cells, and platelets. This can result in symptoms like fatigue, increased risk of infections, and easy bruising or bleeding. The exact cause of MDS is often unknown, but it can be associated with previous chemotherapy or radiation treatments, exposure to certain chemicals, or genetic factors. Treatment options vary and may include blood transfusions, growth factors, or bone marrow transplants to help manage the condition.