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©2013 UpToDate ® Print Email American Academy of Neurology practice parameter for concussion management Grade 1 Grade 2 Grade 3 Presentation 1. Transient confusion 2. No loss of consciousness 3. Concussion symptoms for less than 15 minutes 1. Transient confusion 2. No loss of consciousness 3. Concussion symptoms for more than 15 minutes 1. Loss of consciousness of any duration Management Athlete may return to play if asymptomatic at 15minutes. Athlete can return to play if asymptomatic for one week. Transport to the hospital and observe overnight.Athlete mayreturn to play when asymptomatic for one week (if loss of consciousnesswas brief, ie, seconds) or for two weeks (if loss of consciousness wasprolonged). American Academy of Neurology, Neurology 1997; 48:581.