Definitions of concussion abound and vary widely. A good working definition of concussion is that it is “a clinical syndrome characterised by immediate and transient post traumatic impairment of neural function, such as alteration of consciousness, disturbance of vision and/or equilibrium due to cerebral or brain stem involvement” (SARugby.Net).
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Mechanism of injury
Concussion may be sustained through a variety of mechanisms. These include:
A direct blow to the head
A blow to the jaw
Sudden twisting or shearing force on the head
Sudden deceleration of the head
It is important to bear in mind that it is not necessary for a player suffering concussion to fall to the ground. Also important is the fact that loss of consciousness is not a necessary sign of concussion, but may indicate its severity.
Symptoms
Symptoms and signs of concussion vary widely. Common among these are:
A) Cognitive features
Unaware of the period, opposition, score of the game
Confusion
Amnesia
Unaware of time, date, place. This may in some instances remain intact.
B) Typical symptoms
Headache
Dizziness
Giddiness
Nausea
Unsteadiness/loss of balance
Feeling stunned or dazed
Seeing stars or flashing lights
Ringing in the ears
Loss of field of vision
Double vision
Sleepiness, sleep disturbance
Feeling slowed down
Fatigue
C) Physical signs
Loss of consciousness/impaired conscious states
Poor coordination and balance
Seizure
Slowness in processing information – e.g. answering questions or following directions
Easily distracted or poor concentration
Inappropriate emotions – such as laughing or crying
Nausea or vomiting
Vacant stare/glassy eyed
Slurred speech
Personality changes
Inappropriate behaviour – e.g. running in the wrong direction
Significantly decrease playing ability
Time out of action
Concussion is classified into three grades i.e.: mild, moderate and severe. Depending on the classification and grade of the concussion the athlete may be out of the game from one week to as long as the rest of the season. Due to the nature of this injury it is advisable that return to activity be primarily determined by the lack of the above-mentioned symptoms as well as scans or whatever other methods the treating doctors use in their determination. – (Conrad Booysen, Biokineticist)
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