This document defines key terms related to family stress such as stress, stressors, distress, and eustress. It discusses that stress is normal and influences how families adapt to stressors based on their perceptions and available resources. Several family stress theories are explained, including the Family Stress Theory that stresses accumulate and can lead to family crises, and Reuben Hill's ABCX model of family stress that identifies protective factors (B and C variables) that influence whether stressors lead to crises. The document also discusses resilience and resilient families' abilities to adapt to stressors and crises over the family lifecycle through maintaining strengths and resources. Nurses can assess family resilience and function, enhance family strengths, and assist families in adapting