Major or Mild Neurocognitive Disorder due to Traumatic Brain Injury

Males account for 59% of TBIs in the United States.

The most common etiologies of TBI in the United States are falls, vehicular accidents, and being struck on the head.

Collisions and blows to the head that occur in the course of contact sports are increasingly recognized as sources of mild TBI, with a concern that repeated mild TBI may have cumulatively persisting sequelae.

The criteria are met for major or mild neurocognitive disorder.

There is evidence of a traumatic brain injury—that is, an impact to the head or other mechanisms of rapid movement or displacement of the brain within the skull, with one or more of the following:

1. Loss of consciousness.

2. Post-traumatic amnesia.

3. Disorientation and confusion.

4. Neurological signs (e.g., neuroimaging demonstrating injury; a new onset of seizures; a marked worsening of a preexisting seizure disorder; visual field cuts; anosmia; hemiparesis).

The neurocognitive disorder presents immediately after the occurrence of the traumatic brain injury or immediately after recovery of consciousness and persists past the acute post-injury period.