Most head injuries are not serious. A serious head injury can be recognized based on certain symptoms. Many of these symptoms indicate that brain functioning is worsening. If any of them occur, medical attention should be sought immediately.
Vomiting, irritability, or drowsiness that continues for more than 6 hours
Loss of consciousness
Inability to move or feel part of the body
Inability to recognize people or the surroundings
Inability to maintain balance
Problems with speaking or seeing (for example, slurred speech, blurred vision, or blind spots)
Drainage of clear fluid (cerebrospinal fluid) from the nose or ear