Medical Concussion Definition

What Is a Concussion? | HEADS UP | CDC Injury Center

https://www.cdc.gov/headsup/basics/concussion_whatis.html

A concussion is a type of traumatic brain injury—or TBI—caused by a bump, blow, or jolt to the head or by a hit to the body that causes the head and brain to move rapidly back and forth. This sudden movement can cause the brain to bounce around or twist in …

Concussion - Symptoms and causes - Mayo Clinic

https://www.mayoclinic.org/diseases-conditions/concussion/symptoms-causes/syc-20355594

Concussion: Causes, Symptoms, Diagnosis, Treatments, …

https://my.clevelandclinic.org/health/diseases/15038-concussion

A concussion is a mild traumatic brain injury that results from a bump, violent jolt or blow to your head that disrupts normal brain function. A concussion can also be caused by a hit …

Concussion | Johns Hopkins Medicine

https://www.hopkinsmedicine.org/health/conditions-and-diseases/concussion

A blow or a jolt to the head can cause a concussion or traumatic brain injury (TBI). The injury keeps the brain from working normally. Symptoms of a concussion may last less …