A 15-year-old rugby player with a head injury.

200 CMAJ, February 17, 2015, 187(3) ©2015 8872147 Canada Inc. or its licensors During a rugby tournament, a 15-year-old girl was tackled and her head struck her op ponent’s knee. She was slow to get up, and appeared unsteady and dazed. After using the Pocket Concussion Recognition Tool1 to assess the player’s condition, her coach suspected that she had a concussion and removed her from the game. Her symptoms began to improve over the next few hours, and she was brought to her family doctor the same day for evaluation, with reports of mild headache, difficulty concentrating and feeling “foggy,” all worsened by loud noises and bright lights.