Grief and Loss

Grief is the multidimensional response — emotional, cognitive, physical, behavioral, social, and spiritual — to a significant loss. The neurobiological basis of grief involves activation of the anterior cingulate cortex and insula (processing emotional pain), the amygdala (fear and distress response), and disruption of the nucleus accumbens reward circuitry (yearning and attachment). Cortisol and catecholamine surges during acute grief produce physiologic stress responses including elevated heart rate, blood pressure changes, immune suppression, and sleep disruption. Elisabeth Kübler-Ross described five stages of grief — denial, anger, bargaining, depression, acceptance — though grief is now understood as non-linear and individually variable. Normal (uncomplicated) grief resolves over months with gradual return to functioning. Complicated (prolonged) grief persists beyond 12 months with persistent yearning, identity disruption, emotional numbness, and functional impairment, and may require targeted psychotherapy. The nurse recognizes grief responses across the lifespan, supports patients and families through loss, and identifies when grief responses indicate need for referral to mental health services.