Question
A friend’s child has a bruise on their leg, and they want to know if it’s caused by external force or internal factors.
Answer
A child’s leg bruise may be due to an external collision or possibly related to internal factors such as the blood clotting mechanism. It is recommended to conduct blood tests for clotting factors and anticoagulants to rule out conditions such as decreased platelets or insufficient clotting factors. If it is due to an external force, pressing on the bruised area may cause pain. It is appropriate to take relaxing and blood-circulating painkillers. Typically, the bruise will gradually absorb and disappear within about a week. During this period, it is advisable to avoid vigorous activities and to seek further diagnostic and treatment advice from a local hospital. Thank you! Let me know how I can assist you if you need more help.