What is a TBI
The Center for Disease Control and Prevention (CDC) defines a traumatic brain injury (TBI) as "a disruption in the normal function of the brain that can be caused by a bump, blow, or jolt to the head, or penetrating head injury.”
AJ suffered a diffuse axonal injury (DAI). Johns Hopkin's Medical Center defines a DAI as "the shearing (tearing) of the brain's long connecting nerve fibers (axons) that happens when the brain is injured as it shifts and rotates inside the bony skull. DAI usually causes coma and injury to many different parts of the brain."
No two TBIs are exactly alike. They are a spectrum. They vary tremendously from one person to another, mild to severe, specific to diffuse.