Development: PTSD presents a multi-factorial etiology and depending on the severity will trigger the characteristic symptoms such as disorders of affect, anxiety and depression, this pathological entity is little known and much less widespread, so it is necessary to clarify everything related to this disorder and provide the tools to identify each of the symptoms that characterize it, and in this way, to establish an appropriate treatment based on the characteristics of each individual, taking into account, of course, the associated medical conditions that may arise. It is important to transfer this information to the attention in the Intensive Care Unit (ICU), given that it is in this area of a hospital where the signs and symptoms of PTSD are most frequently observed and in most cases not we managed to accurately identify the condition and, therefore, the medical comorbidity is exacerbated or even the same psychiatric condition prevents a favorable evolution of the medical condition.