Which mental health issue is common in patients after discharge from the critical care unit (CCU)?

Rationale: A. Psychosis is incorrect because acute psychotic episodes are uncommon after CCU discharge. While ICU delirium or ICU psychosis may occur during hospitalization, these usually resolve before discharge and are not the most common long-term mental health issue. B. Social anxiety disorder is incorrect because this is a chronic psychiatric condition unrelated to critical illness or CCU admission. It is not specifically triggered by critical care experiences. C. Depression is correct because patients often experience post-intensive care syndrome (PICS), which includes depression, anxiety, and cognitive impairments after critical illness. Depression can result from the trauma of illness, prolonged immobilization, sleep deprivation, and the psychological stress of being critically ill, affecting recovery, quality of life, and adherence to post-discharge care. D. Eating disorders are incorrect because they are usually pre-existing psychiatric conditions and are not commonly developed as a result of CCU hospitalization.