It may be Post-Concussional Syndrome. Individuals sustaining mild head injury often report a constellation of physical, cognitive, and emotional/behavioral symptoms referred to as PCS. The most commonly reported symptoms are headache and other pain, dizziness or light headedness, memory and concentration difficulty, amnesia, sleep disturbance, frustration, irritability, fatigue and weakness, visual disturbances, sensitivity to light, sensitivity to noise, tinnitus, periods of confusion or mental dullness, emotional and behavioral changes, loss of self-confidence, slow reactions, judgment problems, depression, and anxiety. Headache immediately following a head injury usually clears after minutes or days but sometimes headaches may persist for months or rarely years. The long-term headaches are called post-traumatic or post-concussion headaches. Fortunately, most headaches following head injury gradually taper off within the first three to six months. Even those unfortunate individuals who experience symptoms much longer can be helped.