The symptoms of hemophilia B are mainly excessive or spontaneous bleeding in weight-bearing joints, soft tissues and mucous membranes of the body after injury. Hemophilia is generally divided into hemophilia A and hemophilia B. Hemophilia A is due to the lack of factor VIII and hemophilia B is due to the lack of factor IX. Hemophilia B is mainly manifested by spontaneous bleeding and the symptoms are as follows: 1. Bleeding may occur in the joints, mostly in weight-bearing joints such as the knees and ankles, and when excessive walking occurs. 2. Muscle bleeding and hematomas may also occur. 3. Persistent bleeding occurs after trauma or surgery. When hemophilia B is present, seek medical attention and take regular clotting factor supplements as directed by your doctor.