When a person is told that they have a concussion, they should be concerned. Concussion symptoms are a sign of brain injury. That is why a person with a concussion needs to be watched carefully. Any unusual changes should be reported to a doctor immediately. They should also be awoken several times during the night. This ensures that the person does not slip into a coma. A concussion should not be taken lightly. A person with a concussion should take it easy for a while, as additional injury can cause a serious brain injury.