The severity of symptoms can vary with this disease, and the severe forms become apparent early on. Bleeding is the hallmark of the disease and typically occurs if an infant is circumcised. Additional bleeding manifestations make their appearance when the infant becomes mobile. Mild cases may go unnoticed until later in life, when they occur in response to surgery or trauma. Internal bleeding may occur anywhere and bleeding into joints is common.
Risk factors are a family history of bleeding and being male.
The incidence of hemophilia B is 1 out of 50,000 men. Hemophilia B Please read this Important notice . Please read it.