Disaster management involves preparing for, responding to, and recovering from disasters. A disaster is defined as any event that causes damage, loss of life, or deterioration of health beyond the capacity of local communities. Disaster nursing focuses on meeting physical and emotional needs resulting from disasters. Disasters can be natural or man-made, and affect communities in different ways depending on factors like speed of onset and duration. The phases of disaster management include preparedness, response, rehabilitation, and mitigation. Nurses play an important role in all phases through activities like community assessment, triage, disease surveillance, and psychological support.