Spider and varicose veins are an unfortunate part of many thousands of lives every day. These clusters of raised purple and blue veins can turn every which way down the legs and arms.
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A cherry angioma, a form of hemangioma, is a bright red bump on the skin. It is a benign over-proliferation of blood vessels that increases in frequency with age.
Bed bugs (Cimex lectularius) are a species of blood sucking parasites, that get their name from their tendency to infest bedding. Bites are not serious.