Long Term Consequences of TBI

Posted by rozeklawoffice on December 11, 2011 under General, Mild Brain Injury, Traumatic Brain Injury | Be the First to Comment

Traumatic Brain Injuries can lead to many long term health problems. Early cognitive decline is a leading long term consequence of TBI, which can ultimately lead to Chronic Traumatic Encephalopathy, Alzheimer’s Disease, Parkinson’s Disease, and early onset Dementia. Autopsy studies of professional athletes have been able to confirm that multiple concussions or brain injuries can result in a condition called Chronic Traumatic Encephalopathy.

Chronic Traumatic Encephalopathy is a progressive disease that results in a gradual decline in cognitive function. Victims of Chronic Traumatic Encephalopathy exhibit symptoms consistent with dementia, including confusion, memory loss, depression, and aggressive behavior. The hallmark indicator of Chronic Traumatic Encephalopathy on autopsy of the brain was the buildup of a plaque referred to as tau protein. While it was always understand that repeated concussions could result in the buildup of tau protein, it wasn’t until recently that researchers were able to identify the buildup of tau protein in individuals with only a single head injury. (Victoria E. Johnson, William Stewart, Douglas H. Smith. Widespread Tau and Amyloid-Beta Pathology Many Years After a Single Traumatic Brain Injury in Humans. Brain Pathology, 2011; DOI: 10.1111/j.1750-3639.2011.00513.x).

Alzheimer’s Disease is a progressive form of dementia. It is the most common type of dementia, resulting in confusion, anger outbursts, lack of long-term memory, and language deficits. The cost of Alzhiemer’s Disease on society is great. Because most Alzheimer’s patients will continually and progressively decline, at some point they will have to rely upon others for their care. While family members and loved ones usually try to provide care initially, the challenges of caring for an Alzheimer’s sufferer can take an incredible toll on every aspect of a caregiver’s life. What makes it additionally challenging and unrewarding is that, at some point, the Alzheimer’s sufferer will no longer have the long-term memory required to remember the identity of their caregiver. On autopsy it has been show that tau protein buildup is also a hallmark indicator of patients with Alzheimer’s Disease. Studies have shown that brain injury victims have an increased risk of developing Alzheimer’s Disease.

Parkinson’s Disease is a progressive disorder of the central nervous system with its origins in the midbrain. The initial symptoms of Parkinson’s Disease involve movement disorders, but later Parkinson’s Disease patients typically develop cognitive symptoms including dementia. Parkinson’s Disease, while typically idiopathic in origin, can follow traumatic brain injury that results in damage to the basal ganglia which can result in a dopamine production disruption. (Traumatic Brain Injury in Adult Rats Causes Progressive Nigrostriatal Dopaminergic Cell Loss and Enhanced Vulnerability to the Pesticide Paraquat Che Brown Hutson, Carlos R. Lazo, Farzad Mortazavi, Christopher C. Giza, David Hovda, and Marie-Francoise Chesselet Journal of Neurotrauma 2011 28:9, 1783-1801). Unfortunately, there is no lab test to definitively diagnose Parkinson’s Disease as of yet. Due to the degenerative nature of Parkinson’s Disease, patients and their loved ones face an enormous burden when dealing with long-term care for the Parkinson’s patient.

As if traumatic brain injury survivors did not have enough to deal with just attempting to recover from their injury, now studies have established that victims of TBI have an increased risk of developing early onset dementia, Chronic Traumatic Encephalopathy, Alzheimer’s Disease, and Parkinson’s Disease.