Write clearly, or type on a computer if possible. Describe the traumatic incidents in the chronological order in which they occurred. Tell where the event occurred, what unit you were in at the time, and when it occurred as best you can (as best you can). Give as much detail as you can, as well as your thoughts about what happened. Also include any information that may help doctors understand your condition better, such as other medical problems you have, or drugs you take. Do not send the letter through postal services unless you are sure they cannot be opened by someone else. If you do, then destroy all copies of the letter after reading them. In some cases, patients may be asked to write letters to their insurance companies to explain why they need to stop receiving treatment for their condition. These letters are called "excess benefit requests". The patient's attorney should be able to provide guidance on how to compose an effective request. It is important to remember that it is up to the insurance company to decide whether or not to accept the excess benefit request and cease payment of benefits. As long as there is evidence that the patient continues to suffer from their condition, they should continue to receive coverage. A PTSD letter is usually needed when a patient has received psychiatric treatment and their symptoms have improved but the treatment was so intensive that they experience some of the effects of the trauma each time they develop symptoms.