Head Injury Signs and Symptoms

Signs and symptoms of a concussion may show up immediately, or they can take hours or even days to show up. You don’t always lose consciousness with a concussion.
A concussion causes changes in a person’s mental status and can disrupt the normal functioning of the brain. Multiple concussions can have a long-lasting, life-changing effect.
Signs of a TBI, like a concussion, include:
Signs or symptoms that a head injury may be more than a concussion and requires emergency treatment include: