Post Traumatic Stress Disorder is an anxiety disorder appeared after sufferer has experienced a traumatic event, such as : war, violence, crash etc.
It causes a serious condition which sufferer will give a reaction to phobia condition.
Actually, many general symptoms of Post Traumatic Stress Disorder are:

1. Traumatic memory of sufferer can be reappearing and repeating for many times.
   
2. Sufferer attempts to avoid any events which remind him to the trauma.
   
3. Sufferer loses his sensibility to any specific events.
   
4. Sufferer experiences a sleeping disorder, hard to concentration, and scare about individual safety.
   
5. If those symptoms were critical, it would cause an inability condition.
   

Any risk factors that lead people to suffer Post Traumatic Stress will increase because of many factors including an intensity of traumatic event, how long and how much sufferer reacts a traumatic event, that had been experienced by sufferer.
Unfortunately, if the main cause of Post Traumatic Stress is unknown surely, sufferer or his family who has depression history will be able to have a high risk of Post Traumatic Stress Disorder.
It will be increasing for the next three months after sufferer has experienced a traumatic event.
That stress disorder can be successfully overcame.
Many treatments used to recover sufferer are : counselling, anti depressant drug, or combination of it.
A first recovery is the important thing which will support sufferer to reduce long term symptom of Post Traumatic Stress Disorder, so we must choose a proper recovery.
Another alternative treatment used to recover stress disorder is a sound wave.
The main goal of it is reducing stress by achieving and sustaining a high coherence located in the brain as the center of all mental healthiness.
Sound wave is a kind of modern treatment which does not use any chemical or pharmaceutical drugs.
Because it, many people choose this treatment as an alternative treatment to reduce stress.