Can Anxiety Cause Flashbacks?

Can Anxiety Cause Flashbacks? Post-traumatic stress disorder (PTSD) is a mental health condition that’s triggered by a terrifying event — either experiencing it or witnessing it. Symptoms may include flashbacks, nightmares and severe anxiety, as well as uncontrollable thoughts about the event. Can you have PTSD from anxiety? PTSD can co-occur with generalized anxiety disorder