When acute stress occurs, because of a severe shock, strong fearful, psychomotor excitement, and a certain blindness of behavior, or psychomotor inhibition, or even a state of rigidity, may appear immediately after the stimulus. Initially, the patient may appear dazed and overwhelmed, with narrowed attention, decreased clarity of consciousness, orientation difficulties, and no response to external stimuli. Immediately afterwards, more varied and richer manifestations appear, such as agitation, anger, anxiety, depression, or a state of hyperarousal, tremors, flushing, sweating, and other changes, and the inability to recall the stressful event that just occurred. These symptoms begin to decrease after 1-2 days and last no longer than 3 days. If the symptoms persist for more than 1 month, the possibility of post-traumatic stress disorder needs to be considered.