Tissue death, also known as necrosis, occurs when cells in a specific area of the body are damaged or die due to various factors, such as lack of blood flow, infection, or injury. This process can lead to the breakdown of the affected tissue, which may cause pain, swelling, and other complications. There are different types of tissue death, including coagulative necrosis, which often results from a lack of blood supply, and caseous necrosis, commonly associated with infections like tuberculosis. Understanding the causes and types of tissue death is essential for effective treatment and recovery.