A concussion is a traumatic brain injury that affects the brain functions after a blow or a head trauma. 90% of the time, symptoms resolve spontaneously within 4 weeks. However, it is important to note that in some cases (10%) symptoms may be prolonged. This results in significant and ongoing disability affecting educational, occupational, social and emotional functioning. Post-concussion syndrome occurs when symptoms resulting from a concussion, persist beyond the expected time-frame of recovery.    Post–concussion signs and symptoms: -Headache, dizziness, blurry vision, fatigue, altered noise tolerance, loss of balance  -Irritability, depression, anxiety, emotional lability.  -loss of concentration, memory, or intellectual difficulties, Insomnia    Post–Concussion recommended