It affects approximately 20,000 people per year in France. This is a common disease and most undervalued in the general population. diagnostic criteria post-concussional disorder according to DSM-IV (Diagnostic and Statistical Manual). Symptoms may persist for more than 3 months after head injury. This syndrome is responsible for suffering, personal and professional sound and quality of life of patients. It is particularly debilitating in everyday life, and can have disastrous consequences on their family, social, cultural and professional. It gives rise to many financial implications with compensation requirements and expertise consultations.