Second Impact Syndrome: A Medical Catastrophe that need not occur

In our most recent Newsletter, “Second Impact Syndrome,” is discussed at length. You can also sign up here to receive our Forensic Science Newsletter by email.

Definition of Second Impact Syndrome (SIS)

Occurs when an athlete who has sustained a mild traumatic brain injury, usually a concussion, with or without loss of consciousness, suffers a second traumatic brain injury before the symptoms associated with the first have cleared. Such patients are at risk for developing intense cerebral vascular congestion followed by diffuse brain swelling, which typically occurs immediately after the second impact to the head or to the trunk, the latter imparting acceleration to the brain.

Concussion is defined as a trauma-induced alteration in mental status, usually characterized by confusion and amnesia that may or may not involve loss of consciousness, link “Mild Traumatic Brain Injury (Concussion) in Infants, Toddlers, Children and Adolescents.” Continue reading Second Impact Syndrome: A Medical Catastrophe that need not occur

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