Most bruises or bruises appear after an attack on the skin, usually a strong impact. This breaks the most superficial capillaries and the blood flows into the adjacent area.
By not being able to drain, the accumulated blood coagulates and loses its red color, due to different chemical reactions. Then the cardinal appears, which can be painful if the blow has broken nerve endings and ends up swelling due to the inflammatory reaction of the body.
Bruises are more common in older people whose skin has lost thickness and elasticity. This is because collagen, the connective tissue that keeps skin plump and consistent, deteriorates, making underlying blood vessels more vulnerable to injury.
People who take blood-thinning medications, such as aspirin, are also at increased risk of bruising. These usually disappear within a day or two, although they can also take weeks to clear.
