Diagnosis of Traumatic Brain Injury Initial rapid trauma assessment Glasgow coma scale and neurologic examination CT (For an example of how to triage, diagnose, and treat head injuries in a system in which CT and specialty trauma care are used more selectively than in the United States, see the practice guideline of the National Institute for Clinical Excellence of the United Kingdom, Head injury: triage, assessment, investigation and early management of head injury in children, young people and adults, published in 2014 and last updated in 2019.) Initial measures An initial overall assessment of injuries should be done (see Approach to the Trauma Patient: Evaluation and Treatment).