Sentence examples for a concussion from inspiring English sources

The phrase "a concussion" is correct and usable in written English.
It can be used when referring to a type of brain injury caused by a blow to the head or body that causes the brain to move rapidly inside the skull.
Example: "After the fall, the doctor confirmed that he had suffered a concussion and advised him to rest."
Alternatives: "a head injury" or "a traumatic brain injury."