Some examples of mild traumatic brain injury symptoms may include:

• Headaches
• Sleep disturbances
• Short term memory problems
• Confusion or disorientation
• Fatigue
• You do not need to lose consciousness (black out) to have a brain injury.
• If you have had a "concussion," you have had a mild brain injury.

Some examples of moderate traumatic brain injury symptoms may include:

• Loss of consciousness greater than an hour but less than 24 hours
• Difficulty reasoning or solving problems
• Difficulty carrying on conversations
• Speech problems
• Headaches
• Sleep disturbances
• Fatigue

Some examples of severe traumatic brain injury symptoms include:

• Loss of consciousness greater than 24 hours (could last for several days or longer)
• Longer recovery time
• Significant disturbance in thinking
• Speech and language problems (examples: forgets words, can't speak, can't understand others)
• Movement disturbances (examples: loses balance, can't walk)

Every brain injury is different. These are common symptoms that many people experience after brain injury. You may not have all symptoms on this list-or you may have a symptom this is not on the list.