Necrosis is a form of cell death resulting from acute injury or disease, distinct from regulated cell death pathways like apoptosis, characterized by uncontrolled cellular swelling, membrane disruption, and subsequent release of intracellular contents. As a core concept in cell biology, pathology, and toxicology, its study investigates the underlying triggers, molecular mechanisms, and morphological hallmarks of this uncontrolled demise, emphasizing its critical contribution to tissue damage, inflammatory responses, and various disease states, rendering it a vital area for understanding pathogenesis and developing therapeutic strategies.