The document defines a crisis as a sudden, stressful event that disrupts homeostasis and usual coping mechanisms. It describes 4 phases of a crisis where usual coping fails, new resources are mobilized, and professional help is needed if not resolved. The goal of crisis intervention is resolution through support and restoration or adaptation. Assessment involves safety, biological, psychological, and social factors. The plan aims to preserve autonomy or restore functioning. Interventions include ensuring safety, reality orientation, problem solving, and identifying resources. Evaluation assesses if goals were met and evidence of growth.