Severe head trauma, for example, a fall from more than the height of the person or a hard fall onto a hard surface or object with resulting bleeding or laceration. Check with a physician if the signs of concussion become worrisome. Symptoms tend not to be objective and may be hard to describe. Successive concussions can have devastating consequences, including brain swelling, permanent brain damage, long-term disabilities, or even death.
Concussions are a common type of sports injury and you can also suffer from one if you suffer a blow to the head or hit your head after a fall. Concussion occurs when a blow or impact to the head causes a sudden disruption to part of the brain known as the reticular activating system (RAS).