Traumatic brain injury (TBI) is a common presentation in emergency departments, which accounts for more than one million visits annually. It is a common cause of death and disability among children and adults.
Based on the Glasgow Coma Scale (GCS) score, it is classified as:
Mild = GCS 14 to 15, also called concussion
Moderate = GCS 9 to 13
Severe = GCS 3 to 8
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