Danger Signs

Danger Signs in Adults
In rare cases, a dangerous blood clot may form on the brain in a person with a concussion and crowd the brain against the skull. Contact your health care professional or emergency department right away if you have any of the following danger signs after a bump, blow, or jolt to the head or body:

  • Headache that gets worse and does not go away.
  • Weakness, numbness or decreased coordination.
  • Repeated vomiting or nausea.
  • Slurred speech.

The people checking on you should take you to an emergency department right away if you:

  • Look very drowsy or cannot be awakened.
  • Have one pupil (the black part in the middle of the eye) larger than the other.
  • Have convulsions or seizures.
  • Cannot recognize people or places.
  • Are getting more and more confused, restless, or agitated.
  • Have unusual behavior.
  • Lose consciousness (a brief loss of consciousness should be taken seriously and the person should be carefully monitored).

Danger Signs in Children
Take your child to the emergency department right away if they received a bump, blow, or jolt to the head or body, and:

  • Have any of the danger signs for adults listed above.
  • Will not stop crying and cannot be consoled.
  • Will not nurse or eat.

Source: Centers for Disease Control and Prevention