• Let's visualize the risk
    100 patients just like you
    Of 100 patients who get a CT scan...
    • 3 patients will have a small bleed or skull fracture on CT that will heal on its own (there's a 3% chance of finding a minor injury that doesn't need treatment).
    • 97 patients will have no bleed or skull fracture on CT (there's a 97% chance that a CT will find nothing wrong).
  • Let's discuss the risk
    Studies show that people with LOW RISK injuries do not need a CT scan.

    You may have a concussion.

    A concussion can happen when the brain moves around in the skull.

    A concussion is not a brain bleed.

    Concussions do not show up on CT scan. Brain bleeds do.
  • You may have had a concussion
    Concussion symptoms
    • "Not feeling right"
    • Headache
    • Nausea
    • Balance problems or dizziness
    • Blurry vision
    • Confusion, concentration or memory problems
    A concussion is not a brain bleed. Concussion symptoms usually go away in a few days to 3 months. 10-30% of people with concussion have symptoms that last longer.

    Brain bleed symptoms
    • Drowsiness or inability to wake up
    • Worsening headache
    • Slurred speech, weakness, numbness, or decreased coordination
    • Repeated vomiting or seizures
    • Unusual behavior

    Return to the ED if you experience any of these symptoms


  • How do you treat a concussion?
    You may have had a concussion. Your symptoms may start tomorrow. You do NOT need a CT or MRI.
    Let the brain heal
    • Rest… it’s safe to sleep and be left alone.
    • Avoid activities that could cause another injury.
      • If you must engage in these activities, take extra precautions to avoid an injury (e.g. wear a helmet).
    • Do not drink alcohol.
    Follow-upYou should follow up with your doctor or a concussion specialist to decide when it is safe to return to normal activities and if additional treatment might help you.
RISK DISCUSSION