Alpha Thalassemia: Causes, Symptoms, and Treatment
Medically reviewed by Achuta Uppu, MD, Internal Medicine. Last reviewed: October 23, 2026.
What kind of doctor treats Alpha Thalassemia?
A hematologist, a doctor who treats blood disorders, usually cares for people with alpha thalassemia. Children may also see a pediatric hematologist. A geneticist, a doctor who studies inherited conditions, can help families understand how it is passed down. A direct primary care or concierge doctor can be a first stop for an evaluation and can refer you to a specialist when needed.
What is alpha thalassemia?
Alpha thalassemia is a blood disorder that reduces the production of hemoglobin. Hemoglobin is the protein in red blood cells that carries oxygen to cells throughout the body. When hemoglobin is low, the body does not get enough oxygen. This leads to a shortage of red blood cells, which doctors call anemia.
There are two forms that cause health problems. HbH disease is the milder form. It causes mild to moderate anemia, an enlarged liver and spleen, and yellowing of the eyes and skin. Hb Bart syndrome, also called alpha thalassemia major, is the most severe form. It causes serious health problems before birth.
Symptoms
Anemia can make you feel tired, weak, or short of breath. Other symptoms can include:
- Pale skin.
- Yellow skin and eyes, called jaundice.
- Slow growth and bone deformities in the face.
- An enlarged liver or spleen.
Some people have no symptoms at all. People with the mildest form have small red blood cells but no symptoms. Serious forms are usually diagnosed before a child is 2 years old.
Causes and who gets it
Hemoglobin is made of two proteins, alpha globin and beta globin. Alpha thalassemia happens when genes that help make alpha globin are missing or changed. Most cases come from deletions in two genes called HBA1 and HBA2.
Each person has four alleles, which are copies of these genes. Two come from each parent. Losing or altering some or all of them causes the different forms. Losing one allele causes no symptoms. Losing two causes alpha thalassemia trait, which is mild. Losing three usually causes HbH disease. Losing all four causes Hb Bart syndrome.
Alpha thalassemia occurs most often in people from Southeast Asia, the Middle East, China, and those of African descent. A family history of the disorder also raises the risk.
How doctors diagnose it
Your doctor will do a physical exam to look for an enlarged spleen. Then a blood sample goes to a lab. Red blood cells may look small and oddly shaped under a microscope. A complete blood count, or CBC, is a blood test that shows anemia. Hemoglobin electrophoresis is a blood test that shows an abnormal form of hemoglobin. A test called mutational analysis can help detect alpha thalassemia.
Treatment
Thalassemia is a lifelong condition, but treatments have improved over the years. Treatment depends on how serious the condition is. People with serious forms often need regular blood transfusions and folate supplements.
If you receive blood transfusions, you should not take iron supplements. Too much iron can build up and harm the body. People who get many transfusions need chelation therapy, a treatment that removes excess iron. A bone marrow transplant may help treat the disease in some people, especially children.
It is important to talk to your doctor before you become pregnant. They may need to run tests or change your treatment plan. Genetic counseling can also help if you have a family history and are thinking about having children.
When to see a doctor
Contact your doctor if you or your child has symptoms of thalassemia. Call your doctor right away if new symptoms develop while you are being treated. Call 911 or your local emergency number if you or your child has trouble breathing, chest pain, fainting, or confusion. Untreated, thalassemia major leads to heart failure and liver problems, so keep up with visits and blood tests. Before a planned pregnancy, talk with your doctor about the risk of passing the condition on.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance, while a concierge doctor usually charges more and often works alongside insurance. This kind of doctor can review blood test results and arrange follow-up care. They can also coordinate your care with a hematologist over the long term.
Common questions
Is alpha thalassemia inherited?
Yes. Thalassemia is an inherited blood disorder, which means it is passed from parents to children through genes. How severe it is depends on how many of the four alpha globin gene copies are missing or changed. Missing two causes the mild trait.
What is the difference between alpha thalassemia trait and silent carrier status?
People with alpha thalassemia trait are missing two of the four alpha globin alleles. They may have small, pale red blood cells and mild anemia. Silent carriers are missing one allele and typically have no signs or symptoms.
Can people with alpha thalassemia live a normal lifespan?
It depends on the form. Less severe forms of thalassemia often do not shorten lifespan. People with HbH disease typically live into adulthood. Severe thalassemia can cause early death from heart failure, but regular transfusions and therapy to remove iron improve the outcome.
Should I talk to a doctor before getting pregnant?
Yes. It is important to talk to your healthcare provider before you become pregnant. They may need to run tests or change your treatment plan. Genetic counseling can help you understand the risk of passing the condition to a child.
Sources
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
