• Fig. Sickle cells are sickle-shaped and usually blood small blood capillaries. But normal red blood cells are round and disc-like.
    Autoimmune diseases

    Sickle cell disease

    Sickle cell disease is an inherited blood cell disorder. In a normal blood cell, the red blood cell is disc-shaped, flexible and looks like a doughnut without a hole. They move through small blood vessels to supply oxygen to various parts the body. But in a patient with sickle cell disease, the red blood cells are hard, sticky and look like a sickle used in farming. Sickle cells, unlike normal red blood cells, die early, which leads to a constant shortage of red blood cells. In some cases, when sickle red blood cells travel through small blood vessels, they get stuck and clog the blood flow, which can cause acute…