Post-traumatic stress disorder, more commonly referred to as PTSD, is a condition that can affect anyone who has experienced a traumatic event in the past. These events do not necessarily have to be life-threatening, for instance, PTSD can be triggered by events such as the sudden death of a loved one. In fact, any event which places the brain under sufficient stress is enough to cause PTSD, and what might not affect one person may be traumatic for another.
Traumatic events can replay themselves through the form of flashbacks and nightmares. Those who suffer from PTSD may also experience feelings of isolation, become easily startled, have trouble sleeping, and be at increased risk of mental health conditions such as depression and anxiety. PTSD also significantly increases the chances of developing an addiction or behavioral disorder.