There are numerous causes for<unk> , typically due to diseases affecting the blood. Thalassemia Alpha-thalassemia Hemoglobin Barts hydrops fetalis is the most severe form of alpha-thalassemia, and individuals suffering from this disease have severe anemia during the fetal stage of development. It has been considered as fatal until advances in treatment were made. Patients that survive hemoglobin Barts hydrops fetalis will become transfusion<unk> . Beta-thalassemia Bata-thalassemia causes decreased functional hemoglobin production, and blood transfusions can be given to maintain a sufficient hemoglobin level. Patients with beta thalassemia major are more affected and are recommended to receive transfusion throughout their lives. Myelodysplastic syndromes (MDS) Myelodysplastic syndromes are disorders where defective blood cells are produced by an abnormal bone marrow, resulting in anemia. Severe cases may require ongoing transfusions, and around 70% of people with myelodysplastic syndromes become transfusion<unk>  at some point. Patients who are initially considered to be lower-risk may suffer from disease progression as a result of becoming<unk>  on blood transfusion when they become increasingly unresponsive to alternative treatments.
Transfusion-dependent anemia
Post-transfusion purpura
Acute hemolytic transfusion reaction
Acquired hemolytic anemia
Delayed hemolytic transfusion reaction
Acute posthemorrhagic anemia
Mixed autoimmune hemolytic anemia
Mechanical hemolytic anemia