Myeloproliferative disorders are a group of blood cancers that occur when the bone marrow produces too many blood cells. These disorders can lead to an overproduction of red blood cells, white blood cells, or platelets, which can cause various health issues. Common types include polycythemia vera, essential thrombocythemia, and myelofibrosis. Symptoms may vary but can include fatigue, headaches, and an increased risk of blood clots. Diagnosis typically involves blood tests and bone marrow examinations. Treatment options may include medications, phlebotomy, or, in some cases, stem cell transplants to manage the condition.