A concussion is a type of mild traumatic brain injury that can occur if you suffer a blow to the head or hit your head after a fall. Concussion results in a short-term loss of normal brain function in response to this head injury.- https://www.healthnavigator.org.nz/health-a-z/c/concussion/

Concussion is the most common head injury in sport. It occurs when a player receives an impact to the head or body that causes the brain to shake inside the skull.

Concussion may occur with or without loss of consciousness.- http://nzrugby.co.nz/rugbysmart/concussion

It’s still the leading cause of long-term disability in children and young people worldwide.- http://www.stuff.co.nz/national/health/93684115/Concussions-hidden-toll

“The 1999 Australian Institute of Health and Welfare (AIHW) study, The Definition, Incidence and Prevalence of Acquired Brain Injury in Australia, estimated that there were 338,700 Australians (1.9% of the total Australian population) who had a disability related to acquired brain injury.- https://www.braininjuryaustralia.org.au/resource-category/fact-sheets-brain-injury-australia/


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