HealthNewsDigest.com A concussion may seem like a rite of passage, just part of the game of life. But its not. As a traumatic brain injury, even a minor concussion can have long-lasting effects. While many concussions improve after simple rest and acetaminophen, some people may also develop post-concussive syndrome. These side effects of a concussion can last for weeks or months, and arent related to how severe the concussion is. So they can develop even if a person has a minor blow to the head, and may not occur after a major concussion. About 10 to 20 percent of patients who suffer a concussion continue to have these symptoms one year later. I have found a few articles saying the same thing, which is scary to me. I have been replacing words in sentences with wrong completly un related other words and have had memory loss since my car accident a year ago. Some articles say a concussion can effect you 30 years later. I also recieved a concussion in another car accident(not my fault) a year before the last one. I guess I am screwed.