Is second impact syndrome real?
 

Second impact syndrome is a rare but serious condition in which a second concussion occurs before the brain has fully healed from the first. This can lead to rapid brain swelling and can be life-threatening.

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It is most often reported in adolescents and young adults, whose brains may be more vulnerable to metabolic dysregulation. Although rare, the consequences are severe enough to warrant strict prevention.

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This condition underscores the importance of never returning to play or high-risk activities while symptomatic. Full recovery and medical clearance are essential for brain safety.