Even if you’ve been told that you’ve only experienced a “mild concussion,” all concussions should be considered serious events. In most cases it’s true that a single concussion is unlikely to cause permanent brain damage. However, even having a mild concussion puts you at an increased risk of another concussion. In addition, if you were to experience another concussion before your concussion symptoms have fully gone away, you could be at greater risk of permanent damage or even death if you have another concussion.