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(m)TBI - (Mild) Traumatic Brain Injury

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The Centers for Disease Control and Prevention (CDC) defines a concussion as a traumatic brain injury (TBI) caused by a bump, blow, or jolt to the head or by a hit to the body that causes the head and brain to move rapidly back and forth.


This sudden movement can cause the brain to bounce around or twist in the skull, stretching and damaging brain cells and creating chemical changes in the brain.

Concussion Symptoms


Signs and symptoms generally show up soon after the injury by observation or report from an injured person. However, you may not know how serious the injury is at first and some symptoms may not show up for hours or days. 

Observed Symptoms

  • Slurred speech

  • Appears dazed or stunned

  • Forgetful

  • Moves clumsily

  • Answers questions slowly

  • Loses consciousness (even briefly)

  • Shows mood, behavior, or personality changes

  • Can’t recall events prior to or after a hit or fall

Reported Symptoms

  • Nausea or vomiting

  • Amnesia

  • Balance problems

  • Dizziness

  • Double or blurry vision

  • Bothered by light or noise

  • Feeling fatigued, sluggish, hazy, foggy, or groggy.

  • Ringing in ears.

  • Confusion, or concentration or memory problems.

  • Just not “feeling right,” or “feeling down”.

  • Headache or “pressure” in the head

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