With Concussion. the brain can move a little and the shaking of the brain due to a blow to the head can cause a concussion. A concussion usually produces a temporary disturbance to the normal brain function.

Symptoms of concussion can be mild to severe and in some cases, emergency treatment may be needed.

The most common symptoms of concussion are:

•   A headache and dizziness;
•   Nausea and loss of balance;
•   Confusion;
•   Difficulties with memory
•   Feeling dazed or stunned.