Which type of injury involves closed head trauma where the brain is jolted or shaken?

A concussion is a type of injury that specifically involves closed head trauma where the brain undergoes a jolt or shaking motion. This can occur from a direct impact to the head or from rapid movement that causes the brain to move within the skull. The result is a temporary disruption of normal brain function, which may lead to symptoms such as confusion, headaches, dizziness, or memory problems.

This type of injury does not require a penetration to the skull, which distinguishes it from more severe injuries like fractures, where there is a break in the bone structure of the skull. It is also different from a contusion, which involves bruising of the brain tissue itself following a direct impact, and a strain, which pertains to the overstretching or tearing of muscles or tendons rather than a head-related injury. Understanding these distinctions is important in identifying and treating different types of head injuries appropriately.