👉 A polycythemic is a condition in which the red blood cells of an adult are damaged or destroyed, leading to a decrease in the number of red blood cells. This can occur due to various factors such as age, genetics, and certain medications or conditions. The exact cause of polycythemia cannot be fully understood but it is often associated with changes in the immune system or other organs. It is important for individuals with polycythemia to receive medical attention to prevent further damage to