It is the impairment of normal brain function due to a neurological insult, such as: open or closed head injury (traumatic brain injury or TBI), select cerebral vascular lesions (i.e., aneurysm, hemorrhage, brain stem stroke), hypoxic event (loss of oxygen .. i.e., near drowning), intracranial tumor, and select neurological diseases (i.e., encephalopathy). Well, that is a technical definition. Not very satisfying, is it? It's very impersonal and doesn't really even begin to answer the question.

Traumatic Brain Injury (TBI) is a subset of the larger group, Acquired Brain Injury (ABI). Acquired Brain Injuries include all traumatic brain injuries, in addition to non-traumatic brain injuries, such as strokes and meningitis.

the brain is involved in just about everything we do, injury to the brain can have a very wide range of effects. These effects vary from one person to another depending on the exact nature of the brain injury and its severity. It is helpful to distinguish between the initial effects when the person first sustained their brain injury and the longer-term effects. Read more about the effects of brain injury.

Traumatic Brain Injury (TBI) is defined as sudden, permanent damage to the brain caused by external, mechanical forces (e.g., a blow to the head suffered during a motor vehicle accident). Thus, there is a clear distinction between TBI and brain injury caused by internal events (e.g., stroke, anoxia, tumor), developmental disabilities (e.g., mental retardation, cerebral palsy, autism), and progressive illnesses such as Alzheimer's Disease and Parkinson's Disease.

The functions achieved by the brain of the human newborn are almost entirely in the brainstem. They have to do mostly with basic life processes such as breathing, consciousness, simple movement of the body, the circulation of the blood, heat regulation, the ability to suck, swallow and digest food and the collection and discharge of body wastes. It is when disease or injury affects the brainstem, especially pons and medulla, that life is seriously threatened.

The treatment of brain injury occurs in a number of different stages and differs greatly from case to case due to differences in the severity and nature of the injury. When an injury is a result of an accident the initial treatment may occur before the person reaches hospital. The paramedics at the scene of the accident and en route to the hospital will work to stabilise the person's condition and give immediate assistance.

A severe brain injury occurs when trauma to the brain produces a significant neurological injury, resulting in physiologic changes to a person's brain. Four types of injury may cause trauma to the brain: bull; Closed head injuries occur when the brain tissue is injured by hitting the inside of the skull. This can cause bleeding, bruising, tissue damage and increased intra-cranial pressure or fluid buildup

Mild traumatic brain Injury is also called subtle acquired brain injury. People with mild or subtle brain injuries have cognitive, psychological and physical symptoms that occur after the injury. They usually do not experience a prolonged period of unconsciousness or coma. In fact, some individuals report no loss of consciousness.

Any head injury can cause disruption of brain functions and can result in physical, cognitive, and psychosocial/emotional/interpersonaI impairment.