violent blow to your head can cause your brain to slide forcefully
against the inner wall of your skull and bruise your brain. This can
result in bleeding in or around your brain and the tearing of nerve
concussion causes at least a temporary loss in brain function. Although
losing consciousness is a common sign of a concussion, it's possible to
suffer a concussion without being completely knocked out.
More serious injuries to the brain include:
swelling of your brain (contusion)
A broken skull
bone (skull fracture)
A blood clot in or
around your brain (hematoma)
Although many concussions result from sports injuries, they can occur
whenever your head is subjected to a blow, such as in a car accident or
from a fall. Some common risk factors include:
protective headgear during recreational activities.
Many head injuries are preventable. Unfortunately, people don't
always use some of the simplest safety measures — such as wearing a
helmet while biking or skating.
especially competitive team sports.
More than 300,000 athletes suffer concussions each year. Although
protective equipment continues to improve in quality, many athletes
who participate in high-impact sporting activities, such as soccer,
don't use head protection.
The sudden force or sudden stop involved in a traffic accident may
bruise your brain.
A fall, such as from a bicycle, can result in your striking your
head and exerting tremendous force on your brain.
Previous head trauma seems to make a person more susceptible to