National Concussion Awareness Day is observed every third Friday of September. Established in 2016 by Brooke Mills, a student from New Hampshire who experienced a concussion, the day aims to educate the public about the signs and symptoms of concussions, which are often not immediately visible. Common symptoms include headaches, dizziness, emotional changes, cognitive difficulties, and sleep disturbances. The day is recognized by the Brain Injury Association of America and involves participation from healthcare professionals, coaches, teachers, parents, and non-profit organizations across the United States. Activities on this day include sharing personal stories on social media, hosting educational events, and organizing fundraisers to benefit brain injury awareness initiatives. National Concussion Awareness Day emphasizes the importance of recognizing and appropriately treating concussions, which account for a significant percentage of head injuries, particularly among children and young adults.