What are the early symptoms of hemophilia in infants?

The early symptoms of hemophilia in children consist of two parts. The first part involves bleeding following trauma, and the second part involves spontaneous bleeding. Bleeding after injury is the most common reason for detecting hemophilia in children, as hemophilia is a genetic disorder. Due to gene defects, the activity of clotting factors in the body is reduced. After trauma, the blood's clotting function cannot work properly, leading to significantly prolonged bleeding time and persistent hemorrhage. Hemophilia is often discovered because bleeding cannot be controlled at hospitals. The second type involves symptoms of spontaneous bleeding, which refers to joint hematomas or muscle and skin hematomas in children without any history of injury.