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A bruise, also known as a contusion, is a type of hematoma of tissue, [3] the most common cause being capillaries damaged by trauma, causing localized bleeding that extravasates into the surrounding interstitial tissues. Most bruises occur close enough to the epidermis such that the bleeding causes a visible discoloration.
Jaundice, also known as icterus, is a yellowish or greenish pigmentation of the skin and sclera due to high bilirubin levels. [3] [6] Jaundice in adults is typically a sign indicating the presence of underlying diseases involving abnormal heme metabolism, liver dysfunction, or biliary-tract obstruction. [7]
It is responsible for the yellow color of healing bruises and the yellow discoloration in jaundice. The bacterial enzyme bilirubin reductase is responsible for the breakdown of bilirubin in the gut. [8] One breakdown product, urobilin, is the main component of the straw-yellow color in urine. [9]
But to first make clear what a bruise is: It’s the result of a broken blood vessel (a.k.a. capillary) which causes a leakage and collection of blood under the skin’s surface, explains Riza ...
Biliverdin is seen briefly in some bruises as a green color. In bruises, its breakdown into bilirubin leads to a yellowish color. [2] Role in disease.
Every year, hundreds of thousands of people visit an emergency department due to self-inflicted injuries. Experts explain the psychology behind and treatment options for self-harm.
They are hematoma, a special form of a bruise. Welts occur when blunt force is applied to the body with elongated objects without sharp edges. Like other haematomas, welts change their colors as they heal, which usually takes two to four weeks. The colors include purplish black, reddish blue, brown or yellowish green.
When you eat food, it eventually turns that color by the time it exits the body in the form of stool, according to Baltimore colon and rectal surgeon Jeffery Nelson, MD, the surgical director at ...