Nightmare is an anxiety dream, a dream depicting fearsome events. It does mean that the mind is showing in the form of a picture the specific types of a syndrome that which is described in words. The view that it occurs in the process of brain throwing outside undesired things is not perfect as it occurs repeatedly to an endless extent. It is a terrible, frightening dream based on one’s negative feelings. It may be haunting fear ; something dreaded; or memory of a horrible experience. It is a part of ‘post-traumatic stress disorder’. The traumatic events need to be seen in a subjective approach of introspection and speculation to make extinct or by self-actualization to complete the process.