Condition involving the loss of blood internally (when blood leaks from blood vessels inside the body); externally through a natural opening (such as the oral cavity); or externally through a break in the skin.
The escape from the body of blood as from an injured blood vessel (veins, arteries, or capillaries). It may be external and visible or internal and detected only by special diagnostic methods or observations.
An unusual loss of blood from the body through the skin, through an orifice or internally.
Loss of blood from blood vessels. Bleeding can occur internally or externally through a natural opening, such as the nose or vagina, or through a break in the skin. The amount of bleeding is not necessarily a good indicator of how serious an injury is, because some relatively minor injuries, such as scalp wounds, bleed profusely. Some very serious injuries do not bleed much at all, such as puncture wounds, which are dangerous because of the risk of infection, including tetanus. Internal bleeding may not be noticeable externally, but it can cause physiological shock, in which the skin becomes clammy and the blood pressure drops severely.
Hemorrhage refers to the depletion of blood from the circulatory system, which can result from injuries to blood vessels or underlying bleeding disorders. Bleeding can manifest externally, where it is visible, or internally, when it remains concealed. If blood loss exceeds 10 percent of the total blood volume in a rapid manner, symptoms of shock may arise, including fainting, paleness, and perspiration.
The rate at which blood flows out of a cut is contingent upon the specific type of blood vessel that has been harmed: blood typically seeps slowly from a capillary, flows steadily from a vein, and spurts forcefully from an artery. In cases where an injury does not result in a break in the skin, the blood accumulates around the affected blood vessels just beneath the surface of the skin, giving rise to a bruise.
If blood that has been lost combines with other bodily fluids like sputum (phlegm) or urine, it generally becomes noticeable quite easily. Additionally, bleeding from the digestive tract’s lining can cause vomit or feces to appear darker than usual. However, internal bleeding may go unnoticed until severe anemia manifests.