Gangrene
Gangrene is a serious medical condition that causes the decay and death of body tissue, usually in the extremities such as the fingers, hands, toes, and feet. The two main types of gangrene are dry gangrene and wet gangrene. A third less common type is a form of wet gangrene known as gas gangrene.  A very rare type which affects the internal organs is known as internal gangrene.