Bruising?: Could be a bruise. Bruises are indications that there is bleeding underneath the skin or within the skin due to ruptured blood vessels. The dark color you are seeing is due to the color of blood and the iron that is in your red blood cells. Bruises are most commonly due to trauma, which could be from the suction of the pumper. More info for you: http://wb.md/1zrjW36 Hope this helps.
Answered 5/26/2017
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