Most people who've had a concussion feel better in less than two weeks. However, sometimes symptoms linger. Some may last for many weeks or even months. When this happens, it's called post-concussion syndrome. Another name for it is post-concussive syndrome. The symptoms of post-concussion syndrome include many of the initial concussion symptoms: Dizziness Feeling tired yet having trouble sleeping Difficulty thinking, concentrating or remembering Headaches Feeling depressed, anxious or irritable Balance problems Being sensitive to lights and sounds Some people also experience changes in behavior. They may argue more or act stubborn. Post-concussion syndrome symptoms usually go away after about three months. For some people, though, symptoms last for a year or longer. There's no specific test to diagnose the condition. Your doctor may order an imaging study, such as an MRI, to check for swelling in the brain or other causes of your symptoms. Your doctor will review your symptoms and medical history to make the diagnosis of post-concussive syndrome. Who Gets Post-Concussion Syndrome? People usually don't develop post-concussion syndrome after just one concussion. It's more common in people who've had several concussions. You can get post-concussion syndrome even if you didn't lose consciousness from your injury. There's actually no connection between how severe a concussion is and your chances of having post-concussion syndrome. However, there are some risk factors. They include: Being female Getting the concussion from a trauma like a car accident, sports injury, or fall Being older No one knows why some people get post-concussion syndrome and others don't. Changes in the brain's structure or the way the brain works could cause it. Your mental health may play a role, too. Treating Post-Concussion Syndrome There's no set treatment for post-concussion syndrome. You'll need to work with your doctor to find the best ways to manage your symptoms. You may need over-the-counter or prescription medicine to manage headache pain. It's very important to rest your brain as well as your body while you recover. That means avoiding mentally challenging activities. It also means staying away from strenuous exercise and sports. Coping With Post-Concussion Syndrome You may have depression or anxiety because of post-concussion syndrome. If you do, seeing a psychologist or psychiatrist can help you deal with those problems. You might benefit from both therapy and medicine. To improve your memory and stay organized, use a calendar and other tools to help you stay on track. Your doctor might also suggest cognitive therapy or relaxation therapy to help with these symptoms.