After a concussion, patients can experience a wide variety of symptoms including headache, dizziness or vertigo, fatigue, irritability, sleep problems, concentration difficulties and short term memory problems. These symptoms are considered part of a post-concussive syndrome, are common hours to days after a concussion, and commonly improve within 3-4 weeks. In some patients the symptoms can persist for up to 3-6 months. In patients who have a history of migraine headaches, headaches and vertigo both occur more frequently after a concussion. If the symptoms do not resolve spontaneously within 3 - 4 weeks, a neurologist can suggest medications to treat the symptoms. The most important treatment is to reduce the risk of recurrent concussion.