The signs of mild brain injury—concussion—can be subtle and may not occur for days or even weeks after the injury.
Following a brain injury, you should be alert for symptoms that may not show up for days or even weeks after the injury.
A child should return to the emergency department or see his/her physician immediately if:
You cannot wake the child
The child seems increasingly sleepy
The child cannot stop vomiting (throwing up)
The child has a seizure(s) or a sudden onset of daydreaming or a fixed stare
The child has mood swings, very irritated, sad, or agitated
The child says he/she cannot see clearly or has blurred or double vision
The child is not speaking clearly, seems confused, or doesn’t know who you are
The child has blood or clear fluid from the nose or ears
The child has increased headaches or neck stiffness
The child’s pupils (black center of the eye) are different sizes
An adult should return to the emergency department or see his/her physician immediately if they experience any of the following:
Trouble answering simple questions (What day is it? What happened to you?)
Trouble waking up completely
A headache that is getting worse even after medication
Changes in behavior or personality and not knowing family and friends
Still vomiting (throwing-up) 8 hours after the injury. Or vomiting that starts 1 to 2 hours after the injury
Pupils (black center of the eye) that are different sizes
Stumbling or other problems with walking
Double vision (seeing two of everything), blurred vision, or field cuts
Slurred speech, or repeating questions
Seizures (convulsions), fixed stares, or “daydreaming”
Blood or clear fluid from the nose or ears
Traumatic Brain Injury Facts: Emergency Medical Services (Fact Sheet)
Hechos sobre el Trauma Cerebral: Servicios de Emergencia Medica (Spanish: Traumatic Brain Injury Facts: Emergency Medical Services) (Fact Sheet)
The National Law Center on Homelessness & Poverty's Help for Victims Fact Sheet [PDF 56KB]
The National Law Center on Homelessness & Poverty's Disaster Assistance and FEMA Tips Fact Sheet [PDF 33KB]
U.S. Centers for Medicare and Medicaid: Emergency Information