How does a person get haemophilia?

Haemophilia is a genetic disorder, which is usually inherited. It cannot be caught or transmitted except through inheritance. The haemophilia gene is passed down from a parent to a child.

About one third of new cases are caused by a new mutation of the gene in the mother or the child. In these cases, there is no previous history of haemophilia in the family.

Is haemophilia lifelong?
A person born with hemophilia will have it for life. The level of factor VIII or IX in his blood usually stays the same throughout his life.