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Second Impact Syndrome
Second Impact Syndrome (SIS), refers to when an individual suffers a second traumatic brain injury before the symptoms of an earlier traumatic brain injury have completely healed. It is also known as recurrent traumatic brain injury, and is a rare, but extremely dangerous medical condition. The second impact can be fatal even if it is minor and does not involve loss of consciousness. It is believed that the second blow to the head can impede the body’s ability to autoregulate blood flow to the brain. As a result, the brain swells and intracranial pressure (ICP) increases, displacing the brain. The time from the second impact to complete brainstem failure is brief, usually occurring in fewer than five minutes. Second impact syndrome can affect athletes who return to play too soon after an initial traumatic brain injury. If second impact syndrome occurs, there is very little hope for recovery.
Brain Injury - Types of Brain Injury
- Concussions
- Anoxic Brain Injury
- Coup-Contrecoup Brain Injury
- Penetration Injuries
- Hematomas
- Skull Fractures
- Second Impact Syndrome
- Hypoxic Brain Injury
- Contusions
- Shaken Baby Syndrome
- Brain Swelling
- Brain Tearing
Brain Injury Resource Center
- Types of Brain Injury · A list and explanation of types of Brain Injury, from common brain injuries, such as concussions, to less common and more serious brain injuries, such as Anoxic Brain Injury, Hypoxic Brain Injury, Shaken Baby Syndrome, and Hematomas.
- Brain Injury Information · An overview of Brain Injury accidents, including an examination of Traumantic Brain Injury, the levels of Brain Injuries, disabilities that can result from Brain Injury, and Brain Injury prevention.
