PTSD can manifest in highly variable ways, ranging from high functioning to low functioning and existing on a spectrum. However, it deserves significant attention. People who suffer from post-traumatic stress disorder continue to relive past experiences, affecting every aspect of their lives. Their environment, sleep, thoughts, and stress levels escalate every time their brain is triggered by cues they may or may not recognize. Sometimes we consciously suppress these thoughts, but symptoms can show up unexpectedly.