The Premier Integrative Applied Neurology
and Therapeutic Laser Center of Arizona

concussion and brain injury



A concussion causes damage to the brain. A concussion is a traumatic brain injury. It changes the way that a brain functions. Concussions are relatively common, particularly for individuals who play a sport that involves contact with another person or object, such as football or hockey. Though concussions often result from a blow to the head, they can also result from severe shaking of the head and upper body. Since every concussion causes at least some injury to the brain, it requires time and rest to heal properly. Most concussions are mild, and people usually recover fully. Sometimes a concussion is not obvious at the time it occurs, so people don’t realize that they have experienced it until much later, if at all.


The effects of a concussion are usually temporary but can include headaches and problems with concentration, memory, balance and coordination. Because a healthy brain is necessary to so many areas of a person’s functioning, a more serious or lasting concussion injury may affect an individual’s’ eye movements, balance, spatial orientation, speed, accuracy, endurance, reaction time, thoughts, emotions, and overall health.

Common symptoms after a concussive traumatic brain injury are headache, loss of memory (amnesia) and confusion. The amnesia, which may or may not follow a loss of consciousness, usually involves the loss of memory of the event that caused the concussion.

Signs and symptoms of a concussion may include:

Some symptoms of concussions may be immediate or delayed in onset by hours or days after injury:

Mayo Clinic Website*