Factor deficiency refers to a condition where the body lacks certain proteins, known as clotting factors, that are essential for blood coagulation. This deficiency can lead to excessive bleeding or difficulty in stopping bleeding after an injury. Common types of factor deficiencies include Hemophilia A, which is caused by a lack of factor VIII, and Hemophilia B, resulting from a deficiency of factor IX. People with factor deficiencies often require treatment to manage their condition, which may include infusions of the missing clotting factors. Regular monitoring and preventive care are crucial to minimize the risk of bleeding episodes and ensure a better quality of life for those affected.