1st April 2022

A 16-year-old boy attends a haematology clinic appointment alongside his mother

A 16-year-old boy attends a haematology clinic appointment alongside his mother. He recently had a tooth extraction and experienced excessive blood loss following this. His mother is concerned because her father had a similar condition whereby he suffered from heavy bleeding and died when she was very young. Blood tests show a normal PT, prolonged APTT, and a reduced level of factor VIII.

Which of the following is the correct diagnosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.