Mild, Moderate, and Severe Brain Injuries
Brain injuries are typically rated to be mild, moderate, or severe.
Mild Brain Injury
A mild brain injury may not render an individual unconscious at all, or may do so for less than 30 minutes. While some symptoms manifest directly after the incident, it’s also possible that they will manifest much later. Symptoms are usually mild and are not permanent.
Moderate Brain Injury
A moderate brain injury will cause unconsciousness that lasts over 30 minutes. The symptoms of moderate brain injuries tend to be quite similar to those of a mild brain injury but may be more severe and longer lasting.
Severe Brain Injury
A severe brain injury causes unconsciousness that lasts 24 hours or more. Generally speaking, some symptoms of a severe brain injury will be noticeable immediately, however, symptoms may continue to worsen over time and new symptoms may appear later on during the healing process.