Concussion: Head injury resulting from a violent jolt or blow to the head during a vehicle mishap

https://docs.google.com/document/d/1jGFHssTSeS1LD0LLNVsYRPrMUR6IaIrqRKUsCNLgUKo/edit?usp=sharing

Concussion: Head injury arising from a violent shock or blow to the head during a car mishap