Hello, Thanks for choosing health care magic for posting your query. I have gone through your question in detail and I can understand what you are going through. Diazepam is just ofr the temporay relief of the anxiety. He will probably need paroxetine or sertraline or propranolol or clonidine if it is certainly a post traumatic stress disorder. It would be est to see a psychiatrist who can re confirm the diagnosis or you may contact us on our premium queries so that we can get further details from you as well. Lot many psychotherapies are also possible... Hope I am able to answer your concerns. If you have any further query, I would be glad to help you. In future if you wish to contact me directly, you can use the below mentioned link: bit.ly/dr-srikanth-reddy Wish you good health, Kind regards Dr. Srikanth Reddy M.D.