Thalassemia aWSa/aa refers to alpha thalassemia, a type of thalassemia. Alpha thalassemia is a common type of thalassemia, which belongs to autosomal incomplete dominant disease, and is generally divided into mild, chronic hemolytic jaundice, and severe. 1. Mild: Mild is the more common type, with no obvious clinical symptoms or mild anemia manifestation. 2. Chronic hemolytic jaundice: manifested by mild to moderate anemia, persistent mild to moderate jaundice, mild hepatomegaly and splenomegaly. 3. Severe type: usually develops in infancy and manifests as severe chronic hemolytic anemia. Thalassemia should go to the hospital in time, and the doctor will judge whether treatment is needed and how to treat according to the condition and examination results.