Post-concussive syndrome occurs after a blow to the head or body, a fall, or another injury that jars or shakes the brain inside the skull. Common symptoms are changes in the ability to concentrate, think, remember, or solve problems.

Symptoms such as headaches, personality changes, and dizziness may be related to stress from whatever caused the injury. It may take several weeks to many months for these symptoms to go away on their own. But these may also be signs of a more serious injury and should be discussed with a doctor.

Rest is the best treatment for post-concussive syndrome.