Post Traumatic Stress Disorder (PTSD) is a mental health problem that some people develop after experiencing or witnessing a life-threatening event, like combat, a natural disaster, a car accident, or sexual assault. It's normal to have upsetting memories, feel on edge, or have trouble sleeping after this type of event. If symptoms last more than a few months, it may be PTSD. The good news is that there are effective treatments using Psilocybin.