<Tr> <Th_colspan="2"> Post-concussion syndrome </Th> </Tr> <Tr> <Th> Specialty </Th> <Td> Neurology </Td> </Tr> <P> Post-concussion syndrome, also known as postconcussive syndrome or PCS, is a set of symptoms that may continue for weeks, months, or a year or more after a concussion--a mild form of traumatic brain injury (TBI). The rates of PCS vary, but most studies report that about 15% of individuals with a history of a single concussion develop persistent symptoms associated with the injury . 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 . </P> <P> Though there is no treatment for PCS, symptoms can be treated; medications and physical and behavioral therapy may be used, and individuals can be educated about symptoms and provided with the expectation of recovery . The majority of PCS cases resolve after a period of time . </P>

When does a concussion become post concussion syndrome
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