First aid treatments for head injuries include cleaning any wounds, icing any swelling, and keeping the person still until assessment of any further damage or concussion takes place, according to Mayo Clinic. If a severe head injury occurs, someone needs to monitor the victim's vital signs until medical assistance arrives.
Even minor head injuries can result in more than just superficial wounds, says Mayo Clinic. Persistent symptoms, such as headaches and difficulty concentrating, can occur even with minor bumps, and the victim requires rest until he fully recovers. If a more severe head trauma occurs, the head and neck must remain still to reduce central nervous system injury. If the person stops breathing, he requires CPR.