**Spontaneous bleeding** is an unexpected and not caused by a previous blow or injury release of blood from the vessels into the body cavity or into the external environment.
Bleeding, or bloodletting, is the process of removing a certain amount of blood from the bloodstream by cutting the vessel wall at the narrowest point. As a result of bloodletting (usually small in volume), blood pressure in the arteries decreases and in the veins increases, and therefore some filling of the capillaries with blood occurs. Soon after the scopy was hatched