Brain Concussion

A nonspecific term used to describe transient alterations or loss of consciousness following closed head injuries. The duration of UNCONSCIOUSNESS generally lasts a few seconds, but may persist for several hours. Concussions may be classified as mild, intermediate, and severe. Prolonged periods of unconsciousness (often defined as greater than 6 hours in duration) may be referred to as post-traumatic coma (COMA, POST-HEAD INJURY). (From Rowland, Merritt's Textbook of Neurology, 9th ed, p418)

Also Known As:

Cerebral Concussion; Concussion, Brain; Commotio Cerebri; Concussion, Intermediate; Concussion, Mild; Concussion, Severe; Mild Traumatic Brain Injury; Brain Concussions; Cerebral Concussions; Concussion, Cerebral; Intermediate Concussion; Intermediate Concussions; Mild Concussion; Mild Concussions; Severe Concussion; Severe Concussions

Nervous System Diseases: 14178
- Central Nervous System Diseases: 4213
  - Brain Diseases: 15694
    - Brain Injuries: 16810
      - Traumatic Brain Injuries: 14604
        Brain Concussion: 1149
- Nervous System Trauma: 291
  - Craniocerebral Trauma: 6385
    - Brain Injuries: 16810
      - Traumatic Brain Injuries: 14604
        Brain Concussion: 1149
    - Closed Head Injuries: 610
      - Brain Concussion: 1149
Wounds and Injuries: 176426
- Nonpenetrating Wounds: 315
  - Closed Head Injuries: 610
    - Brain Concussion: 1149
- Nervous System Trauma: 291
  - Craniocerebral Trauma: 6385
    - Brain Injuries: 16810
      - Traumatic Brain Injuries: 14604
        Brain Concussion: 1149
    - Closed Head Injuries: 610
      - Brain Concussion: 1149

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