Myelodysplastic syndrome is a group of conditions that makes the bone marrow unable to produce enough healthy blood cells, leading to an excess of abnormally developed cells. Based on the type and number of blood cells affected and the genetic material in the bone marrow, myelodysplastic syndrome (MDS) can be categorized into multiple subtypes. To get a precise MDS diagnosis, one should keep an eye out for the following warning signs of the condition:  1. Fatigue MDS can result in anemia, i.e., low red blood cell (RBC) count. The primary function of RBCs is to carry nutrients and oxygen to various parts of the body. When the body does not have enough of these cells, it may experience fatigue. This lack of energy may be accompanied by paleness, general weakness, shortness of breath, cold hands and feet, dizziness, and irregular heart rate. 2. Unexplained bruising When MDS affects platelets, the cells responsible for clotting blood, one may experience thrombocytopenia, i.e., low platelet count. This can cause bleeding into the skin and unexplained bruises. Here, one may notice pinpoint-sized spots on the skin called petechiae. 3. Unusual bleeding One may bleed more often than usual, and even a minor bump or a scrape can cause bleeding as the blood is unable to clot quickly.