A head injury should prompt an automatic 911 call if the victim is unconscious at any point after the injury. Loss of consciousness can indicate a more serious brain injury, and immediate medical evaluation is crucial.
Other situations that also warrant a call to 911 include:
- The victim exhibits signs of confusion or doesn't know what happened.
- There are severe headaches, repeated vomiting, seizures, or unusual behavior.
However, among the options you provided, the loss of consciousness is the most critical indicator for an emergency response.