This document discusses crisis, its causes, phases, and resolution. It defines crisis as a state of disequilibrium caused by an event overwhelming an individual's coping abilities. Crises can be situational, developmental, trauma-related, or due to psychopathology. The phases of a crisis include increased anxiety, overwhelmed coping mechanisms, increased pressure, and potential psychotic symptoms if unresolved. Nurses play a key role in crisis resolution through assessment, diagnosis, planning, implementation, and evaluation to help clients return to pre-crisis functioning.