
“It appears that ionic changes at cell membranes initiate events that cause a progressive cascade that can be potentially deleterious. Therefore, most TBI is not immediate. Brain damage is a process, and not an event, that is set into motion by the ionic fluctuations that occur immediately. “

Source:(Graham, Gennarelli, Greenfield’s Neuropathology, © 1996, Arnold, page 208.)
The concussions that disable, are almost always more symptomatic at 24 hours, than at the 2-4 hour time frame when injured persons are evaluated in the emergency room. Brain injury symptoms escalate over the first 24 hours, because brain injury involves a cascade of events. It is critical that if you are still symptomatic the day after your injury, go back to the same Emergency Room, don’t wait for a doctors appointment. It is critical that the Emergency Room personnel see that the symptoms still persist or have gotten worse.