Second Impact Syndrome

Excerpt

Second impact syndrome (SIS) is a condition in which an individual experiences a second head injury before completely recovering from a prior head injury. Second impact syndrome has recently gained increased attention as many cite athletes sustaining a concussion and returning to the sport early as being particularly at risk. Though it is a relatively rare condition, physicians should be aware of SIS and educate patients who have experienced or are at risk of experiencing a head injury, as the syndrome is often deadly. The term second impact syndrome entered the medical lexicon in 1984 when Saunders and Harbaugh wrote an article describing a case report of a football player who died four days after suffering a head injury after he returned to play on the day of his death. He collapsed and died after a presumed second head injury.