Cuts to the scalp bleed a lot. People who have watched enough professional wrestling know that this technique is sometimes used to make the wrestlers look more hurt than they really are. Attempts to clean the wound can result in even more serious bleeding. Instead, place a sterile dressing on the wound until the bleeding is under control. Then apply a bandage over the dressing to hold it in place and to keep the pressure on it. If the cut isn’t that bad it should be able to just heal itself without someone having to take the victim to a hospital. When in doubt: seek medical attention.
A brain injury may be accompanied by: blood or cerebrospinal fluid (clear, may be blood-tinged) coming out of the nose or ears (the blood may also come out the mouth of the victim), temporary unconsciousness, paralysis, abnormal speech, convulsions, headache, dizziness, vomiting, unequal pupil sizes, loss of bowel and bladder control.
In the event of brain injury: keep the victim lying down, treat for shock, and get medical attention as quickly as possible. Do not move the head as this can cause paralysis if the victim has a neck injury. Don’t give the victim any fluids. Control any external bleeding present (again: be careful of moving the neck).
Tilt the head forward and apply pressure to the nose with some sort of sterile dressing. (Tilting the head back instead of forward can cause the victim to choke to death on his own blood.)
“The American Medical Association Family Medical Guide” Medical Editor: Charles B. Clayman, MD (ISBN: 0-679-41290-5)
“Standard First Aid and Personal Safety” (“Prepared by the American Red Cross”) (ISBN: 0-385-15736-3)
P.S. Getting fluid in one’s lungs can cause them to fill with fluid even more-so. In this way one can drown on dry land from nothing more than a glass of water. Just a heads-up.