Sickle cell anemias are chronic hemolytic diseases that may induce three types of acute accidents: severe anemia, severe bacterial infections, and ischemic vasoocclusive accidents (VOA) caused by sickle-shaped red blood cells obstructing small blood vessels and capillaries. Many diverse complications can occur. The disease is sickle cell disease (MONDO_0011382, a Monarch Disease Ontology term). Also known as: Haemoglobin S disease without crisis, Hb SC disease, Hb-S/Hb-C disease, Hb-SS disease without crisis, Hemoglobin S disease without crisis, Sickle Cell Disease, drepanocytosis, haemoglobin SC disease.