Mottled skin, a piebald-like purple or blue coloration on the skin, is caused by a vascular condition. The discoloration often resembles a web or lace-like pattern. Mottled skin usually develops on the legs and feet, but it can occur anywhere on the body. While a direct cause is not known, there are a large number of conditions with links to mottled skin.
Experts refer to mottled skin as livedo reticularis. This is a term that describes a variety of conditions that feature mottled discoloration of the skin. “Livedo” describes the mottling color, while “reticular” describes its unique patterning. In some cases, doctors classify the issue more specifically, using terms such as
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