A brain injury, involving the head, can be very dangerous. To most people that suffer head injuries it means a long recovery period, and a rediscovering of one's self, as well as huge medical bills in the process.

The death of actress Natasha Richardson this year, made the world see how serious head injuries can be, and to examine the causes and symptoms more; when a fall on a ski slope turned into a fatality. Autopsy results called it a subdural hematoma or bleeding brain, which is preventable if caught early enough.

Each part of the brain serves to provide a function to be healthy. The functions are breathing, heart rate, body temperature, body movements, personality, and metabolism. Also included are the senses vision, smell, hearing, touch, and taste.

The brain has a big job to keep everything working properly, and when injury happens it is put into distress. A brain injury is a concussion. Safety precautions should be considered when doing sports activities or any activity that if a fall occurred would cause injury. A helmet should be worn for sports activities to protect the head.

There are many causes of brain injuries including a car accident, shaken baby syndrome, sports, falls, guns and many more. Everyone that has a brain injury accident is not the same, and every incident should be treated on an individual basis. Taking into consideration are the location and how severe the accident is.

A brain injury happens when the brain is hit outside with blunt force impacting the head to cause the brain to move, or break the skull causing injury. A blow directly to the head causes head trauma when the head is under stress from rapidly moving back and forth causing brain damage. This kind of injury is seen resulting from a car accident, physical violence or shaken baby syndrome.

An acquired brain injury causes stress and effects the cells of the entire brain not just cause a specific area. It's not caused by hereditary, or by birth trauma, it occurs after birth, usually as a fall. Symptoms include: thinking skills, longer time in vegetative state, severe behavior problems, and muscle movement disorders.

If brain injury is suspected the injured should be taken to an emergency room immediately or call 911 for help. There are many symptoms associated with traumatic brain injury including, headache, nausea, memory loss, confusion and many more. They are not always seen right away.