This is the most common hereditary coagulopathy in humans. It can be congenital or acquired. It was described in 1926 by Erik von Willebrand in inhabitants of the Aland Islands in the Sea of Bothnia between Sweden and Finland. It was called 'pseudohemophilia' but later became known as vascular haemophilia.
This is a companion discussion topic for the original article at https://patient.info/doctor/haematology/von-willebrands-disease