What is a deadly illness?

A deadly illness is a severe disease or condition that carries a high risk of death. Deadly illnesses are often chronic or degenerative, meaning they progress over time and gradually weaken the body's systems. Some examples of deadly illnesses include cancer, heart disease, stroke, diabetes, kidney failure, and liver failure. These illnesses are often associated with substantial physiological dysfunction, organ failure, or systemic collapse, leading to a shortened life expectancy and an increased likelihood of death. Timely diagnosis, proper medical care, and supportive treatments can sometimes manage or slow the progression of deadly illnesses, improving quality of life and, in some cases, achieving remission or long-term survival. However, certain illnesses may be considered incurable or terminal, meaning they eventually result in the individual's death despite medical intervention.