People with PTSD experience very strong, frequent, and unpleasant emotions and thoughts, which may increase the likelihood that they will rely on unhealthy coping strategies, such as deliberate self-harm or substance misuse. Although these behaviors may reduce distress in the moment, they have many long-term negative consequences. PTSD symptoms may start within three months of a traumatic event, but sometimes symptoms don’t appear until years after the event. These symptoms cause significant problems in social or work situations and in relationships. The following self-destructive behaviors often go hand-in-hand with the symptoms of PTSD. For more mental health resources, see our National Helpline Database.