Subconcussion: not a clearly defined category
Subconcussive brain trauma
It results from some sort of direct or indirect force to the head that does not result in signs and symptoms used to diagnose a concussion.
A substantial source of acute and chronic structural and functional changes in the brain of individuals participating in contact sports.
They are involved in impacts that transmit mechanical energy to the head from a force sufficient to cause neuronal injury or dysfunction.
Athletes may experience hundreds of unrecognized sub concussive impacts through which they continue to engage in sports, seemingly unharmed.
The frequency of subconcussive head impacts have been correlated with you acute microstructural changes in the cortical and deep gray matter structures of the brain.
There is a correlation in neuropsychological testing in athletes athletes playing contact sports.
Subconcussion head injuries are associated with transient near point of convergent visual changes.
Concussion results in symptoms:
Difficulty concentrating or remembering
Loss of consciousness.
A direct or indirect blow to the head does not necessarily result in symptoms.
In some cases, mild and temporary symptoms that do not rise to the level of a concussion may occur, and this is ref2242ed to as subconcussion.
Health risks from subconcussive injury is greatest for patients that receive many such hits over time.
Recurrent insults results in subtle deficits in working memory, and neurophysiological changes in part of the brain when assessed by fMRI imaging.
Standard brain imaging tests, generally cannot show such small changes.
Repetitive subconcussive hits that keeps the brain from healing properly, may be the result of an unresolved inflammation that contributes to brain problems over time.
It can be considered a very mild form of traumatic brain injury.
Chronic traumatic encephalopathy is a chronic brain condition that causes damage or death to parts of the brain over time.
Chronic traumatic encephalopathy May manifest as problems with memory, judgment, movement, mood, and even eventually dementia.
Subconcussive hits may also play a role in triggering CTE.
The impact of subconcussion appears to accumulate over time.