18+ Cooley's Anemia Symptoms US . Severe cases can lead to widespread organ damage, which. Symptoms of cooley's anemia usually present within the first two years of a child's life. What You Need to know about Thalassemia - Health Blog ... from yourhealthblog.net Condition in which the concentration of hemoglobin in the circulating blood is below normal. Other signs and symptoms anemia can also cause you to pass out. Symptoms of cooley's anemia usually present within the first two years of a child's life. Condition in which the concentration of hemoglobin in the circulating blood is below normal. Additional symptoms that may occur include masses that form because of blood cell production outside of the bone marrow (extramedullary hematopoiesis). Severe cases can lead to widespread organ damage, which. Other signs and symptoms anemia can also cause you to pass o