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 without resolution could lead to disorganized thoughts or psychosis. The goal of crisis intervention is quick resolution through support and restoration or adaptation. Assessment examines perceptions, stressors, coping mechanisms and bio-psycho-social status. The plan aims to preserve autonomy or maximize functioning. Interventions focus on safety, orientation, problem-solving and establishing boundaries. Evaluation assesses if goals were met and identifies growth or future coping strategies.