Posted in Web Concussion Signs and Symptoms | HEADS UP | CDC Injury Center January 27, 2021 Concussion Signs Observed Can’t recall events prior to or after a hit or fall. Appears dazed or stunned. Forgets an instruction, is confused about an assignment or position, or is unsure of the game, score, or opponent. https://www.cdc.gov/headsup/basics/concussion_symptoms.html