The subcapsular hematoma you mentioned should be a hematoma between the subcutaneous tissue of the head and the aponeurosis of the cap. Without a wound on the scalp, there will be no infection. After the injury, the hematoma should be bandaged by pressure to prevent expansion, and then treated by promoting blood circulation and removing blood stasis, which can generally be absorbed. If it is not absorbed, the hematoma can be pulled out after liquefaction, and it will get better slowly. If there is scalp laceration, you need to go to the hospital for wound debridement and suture to prevent scalp infection. According to the wound condition, if there is no infection, the stitches can be removed in 5-6 days. After the wound is healed, there is generally no other influence except scar.

After head trauma, it is mainly to see if there is any injury and bleeding in the head. Need to go to the hospital for CT examination.