After TBI, people often report symptoms following injury, but improve over time. The most common symptoms after brain injury are known as post-concussion syndrome (PCS). These symptoms include but may not be limited to: - physical complaints (dizziness, fatigue, headaches, visual disturbances, trouble sleeping, sensitivity to light and sound, poor balance), - cognitive changes (poor concentration, memory problems, poor judgment and impulsivity, slowed performance, difficulty putting thoughts into words), - psycho-social concerns (depression, anger outbursts, irritability, personality changes, anxiety).