Emma was a 49 year old married mother of two children. She worked full time and as part of her job she drove extensively all over the US. On average she would drive 1500 miles a week in her company car. In June last year she had a tragic road traffic accident where she was hospitalized for severe injuries. Since the accident she was too afraid to drive, was very anxious, had frequent nightmares when she travelled as a passenger and was on sick leave from her employers. Emma may have been suffering from: