Thalassaemia
Thalassaemiais caused by faulty genes that a child inherits from their parents.
It's not caused by anything the parents did before or during the pregnancy and you can't catch it from someone who has it.
Genes come in pairs. You inherit one set from your mother and one set from your father.
To be born with the main type of thalassaemia beta thalassaemia a child has to inherit a copy of the faulty beta thalassaemia gene from both of their parents.
This usually happens whenboth parents are "carriers" of thefaulty gene also known as having the "thalassaemia trait".
Thalassaemiacarriers don't havethalassaemia themselves, but there's a chance they could have a child with the condition if their partner is also a carrier.
If both parentshave the beta thalassaemia trait, there's a:
Another type of thalassaemia alpha thalassaemia has a more complex inheritance pattern because it involves four potentially faulty genes, rather than just two.
Children of parents who are carriers for alpha thalassaemia trait will be born with the condition if they inherit three or four copies of the faulty gene. Children who inherit one or two copies will be carriers.
Thalassaemia mainly affects people who are from, or who havefamily members originally from:
A simple blood test will show whether you're a carrier. This is done routinely during pregnancy and after birth, but you can ask to have the testat any time.
Theydetermine characteristics such as the colour of your eyes and hair.
People with thalassaemia have a problem with the genes involved in the production of haemoglobin a substance found in red blood cells that's used to carry oxygen around the body.
In people with thalassaemia major or other severe types, either no or very little haemoglobin is produced, which can make them very anaemic if they don't have regular Blood transfusion .
Read about thalassaemia, a group of blood disorders that affect a substance called haemoglobin. Find out about the symptoms, causes and treatments for the condition.
Read about the main symptoms of thalassaemia, including anaemia, delayed growth and problems caused by too much iron in the body.
Read about what causes thalassaemia, how it's inherited and how it affects the body.
Read about screening for thalassaemia in pregnancy, testing for the condition later in life and getting a test to see if you're a carrier of thalassaemia.
Read about the main treatments for thalassaemia, including blood transfusions, medication to remove excess iron from the body and stem cell transplants.
Read about living with thalassaemia, including what you can do to stay healthy and advice about planning a pregnancy.
Read about how to find out if you're a carrier of thalassaemia and what it means for your health and any children you have.