The term 'EXTREME SHOCK' can be summarized by the crossword solution 'TRAUMA'. TRAUMA is a psychological response to an extremely stressful event, such as a natural disaster, a serious accident, or a violent attack. It can also refer to physical injuries caused by an event. TRAUMA can cause physical and emotional symptoms, such as fear, anxiety, depression, and difficulty sleeping. People who experience TRAUMA may also have difficulty functioning in their daily lives.