For many years, people believed that only men could have symptoms of hemophilia and that women who “carry” the hemophilia gene do not experience symptoms themselves.
We now know that many carriers do experience symptoms of hemophilia. As our knowledge about the disorder has increased, so has our understanding of why and how women can be affected. Some women live with their symptoms for years without being diagnosed or even suspecting they have a bleeding disorder. Through education and awareness-raising, the World Federation of Hemophilia is working to close this gap in care.
Resources: https://www.wfh.org/en/abd/carriers/carriers-and-women-with-hemophilia-en