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Post-concussion syndrome is a set of symptoms that may continue for weeks, months, or a year or more after a concussion – a mild traumatic brain injury. About 15–30% of people with concussion develop persistent or prolonged symptoms associated with the injury. Prolonged concussion is defined as having concussion symptoms for over four weeks following the first accident in youth and for weeks or months in adults.
A diagnosis may be made when symptoms resulting from concussion last for more than three months after the injury. Loss of consciousness is not required for a diagnosis of concussion or post-concussion syndrome.
Though there is no specific treatment for PCS, symptoms can be improved with medications and physical and behavioral therapy. Education about symptoms and details about expectation of recovery are important. The majority of PCS cases resolve after a period of time.