A concussion is a type of mild traumatic brain injury caused by a bump, blow or jolt to the head. Take your child to the emergency room right away if they have any of these symptoms. Learn more: https://www.healthychildren.org/English/health-issues/injuries-emergencies/sports-injuries/Pages/Concussions.aspx?_gl=1*1ygvz5x*_ga*MTY0MjU2NjE3My4xNzEwMTY2MTc5*_ga_FD9D3XZVQQ*MTc0NDEzNjI5Ny4yODIuMS4xNzQ0MTM2MzEwLjAuMC4w