Haemophilia is a genetic disorder. This means that it is caused by an abnormality in the genes inherited from parents. It is not an organic disorder, which refers to a disorder affecting the physical structures or organs of the body. It is also not a metabolic disorder, which involves problems with the body`s metabolism and chemical processes. Haemophilia does not involve hormonal imbalances, so it is not a hormonal disorder. Instead, it is caused by a deficiency in the blood clotting proteins known as factors VIII or IX. This deficiency affects the blood`s ability to clot properly, leading to prolonged and excessive bleeding.