Delayed-stress syndromes, otherwise known as post-traumatic stress disorder (PTSD), is a mental health condition that develops after a person experiences or witnesses a traumatic event. Synonyms for delayed-stress syndromes include combat stress reaction, acute stress disorder, adjustment disorder, shell shock, and survivor guilt. Different terms are used depending on the context in which the trauma occurs. For example, combat stress reaction is commonly used in military settings, while survivor guilt is often used in cases of natural disasters or accidents. Regardless of the term used, delayed-stress syndromes can be a debilitating condition that requires professional treatment and support for healing and recovery.