When signs and symptoms of concussion are still present after 4 weeks, it is considered to be persistent or post-concussion syndrome. As the effects of concussion are still present, the player will not have satisfied the requirements to return to play. Depending on what the persisting problems are – headaches, dizziness, ocular motor function, light sensitivity etc they will still be performing a rehabilitation program. A GP may refer them to a neurologist or psychologist or optometrist to help treat the ongoing symptoms.