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Bruises change from purple to brown to green to yellow due to the breakdown of the hemoglobin pigment found in the red blood cells that leave the vascular system when the vessel walls are damaged.

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13y ago
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12y ago

You can not do a massage to a bruise that is prior to turning yellow. When your bruise turns yellow, it means it is healing, so do not bother it. If you hit it, or give it a massage, it will get more irratated and your bone might get infected. If you leave it alone, it will just heal and go away. It turns brownish when it's about to go away. I have one on me right now. It used to be bright yellow, but it turned brownish, and now it is going away. I didn't know what it was at first, so I asked a doctor and they told me. I hope this has helped you. Thanks for taking the time to read this long paragraph.

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8y ago

In a simple explanation, healing! A bruise begins as darker black and blue. As the body sends in defenses to clean up the site, the bruise changes color: green, blue, yellow, pink. As healing progresses, the bruise coloring gets lighter. It may also spread out more. It is not getting worse, but getting better.

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12y ago

If your bruise is yellow, it means that it was a really bad bruise, so it heals with a yellow tint. Just leave it alone, and it will go away.

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8y ago

Yellow in bruises means the bruise is not new. It also means the spot is healing. Next, the color will spread out but become lighter.

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Q: What causes a bruise to change from purple to yellow?
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That was a pretty deep bruise that is now mostly healed. All bruise colors are from hemoglobin, the red compound in red blood cells. This causes the initial red/purple color of a new bruise. As the hemoglobin breaks down it turns into biliverdin, which causes the greenish color. That will break down into bilirubin which looks yellow. Then the breakdown will be completed and the bruise will be healed.


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Discoloration caused by a bruise?

A bruise is in medicine called a contusion. A bruise occurs when force injures the small blood vessels, capillaries. Blood leaks out of capillaries into the tissue. This initially causes the skin to turn a dark black or blue or some mixture. This deep, dark coloring signifies the bruise is fresh or new. But the body immediately begins repairs. Macrophages zoom to the area to do clean up, which causes heat at the site, so a bruise might feel warmer than regular skin. The circulatory system sends in more blood flow to promote healing. As macrophages eat up debris, and the body reabsorbs blood/debris from the tissue, the bruise begins to change to a rainbow of colors: blue, green, yellow, pink, etc. These colors begin to lighten into pastels. When you see a multicolored bruise that looks like it is spreading or getting bigger, and multi-colored or pastel, it is a sign of an old bruise, not new. Within 7-10 days the body has done much of the work, and the bruise has faded or healed.


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Why does blood form under skin when i bruise myself?

Bruises form as small capillaries under the skin are broken from trauma or injury. Blood oozes out until clotting stops the flow, and as the blood is broken down, will turn from a purple color to an orange color from the remaining iron and hemoglobin. In other words, your vains break under the skin but your skin doesn't break, so it's kind of like bleeding on the inside.