A bruise on the head is a condition medically known as a scalp hematoma. There are three types of scalp hematomas: subcutaneous hematoma, subcapsular hematoma and subperiosteal hematoma. To achieve the purpose of reducing the swelling, first of all, you can use ice water or ice packs for cold compress treatment, and then you can assist in the treatment of drugs, such as sodium hepaticoside or swelling pain, such as this case, generally speaking, seven days to be able to reduce the swelling. This is the most conventional method. However, because each person’s condition is different, the treatment plan is also different. For simple scalp hematoma, the above-mentioned methods can be adopted, and some can even apply pressure bandages, which can also promote the reduction of swelling. However, for subcapsular hematoma, because the area involved in the hematoma is large, and there is often more bleeding and fluctuation, it is necessary to improve the head CT to clarify the condition before treatment. And be sure to clarify the intracranial status, because a very large number of people will have cerebral contusions, subdural hematomas, epidural hematomas, and a host of other conditions, so be careful not to lose sight of this and focus on intracranial symptoms. Therefore, in summary, scalp hematoma can be promoted by medication or other means to reduce the swelling, but do not be hasty, and be sure to check the intracranial situation and integrate all aspects of relevant treatment.