CT scans are indicated for those individuals suspected of having a skull fracture or a bleed inside the skull.

CT scans do not show evidence of a concussion rather a concussion is a diagnosis arrived at by a physician's clinical assessment.  Symptoms of a concussion include nausea, dizziness, immediate loss of consciousness, and headache.

Although CT scans are excellent tools to rule out skull fracture and bleeding in the brain, they are not without risks and thus should be used only in those circumstances in which the likelihood is a bit higher.

When do neck injuries need to be evaluated?

Any time the head is jerked around or undergoes a significant bump, a neck injury is possible.  Midline pain, numbness or tingling of the hands/arms, or severe pain may suggest either a fracture or a subluxation (malalignment) of the cervical spine.  Xrays or CT scans are necessary to exclude injury.  If suspected, do not move the injured individual without professional assistance and immediately seek medical care.