Many Florida residents realize that a major blow to the head requires careful monitoring to ensure that there aren't signs of a concussion. However, dizziness and headaches in the absence of any obvious head injuries could be confusing. In such cases, brain injury might not be immediately obvious. However, it is estimated that four of every five traumatic brain injuries occur without concussions. Mild symptoms should not be ignored because they could be attributed to brain injury that has occurred due to brain inertia.