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    How Lupus Affects Your Skin

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    Other Skin Issues continued...

    Purplish spots on lower legs. These happen when the blood vessels in your skin become inflamed and damaged. Theymay show up as small spots or larger knots. They may also show up as lines or spots of red or purple bumps in the folds of your fingernails or on your fingertips.

    These spots are called cutaneous vasculitis lesions. They can cause severe damage to skin tissue and gangrene. If you have small black spots on your fingers or toes, let your doctor know right away.

    Color changes in fingers and toes. Blood vessels in your fingers and toes can tighten and slow the flow of blood there. The tips of your fingers or toes may turn red, white, or blue in cold weather or a cold room. They may also tingle, hurt, or go numb.

    This problem is known as Raynaud's phenomenon. It helps to keep your toes and fingers warm by wearing mittens and thick socks.

    Bluish, lacy pattern under the skin. This is known as livedo reticularis. It's likely to appear on your legs, where it can give a "fishnet" look. Like Raynaud's, it tends to be worse in cold weather.

    WebMD Medical Reference

    Reviewed by David Zelman, MD on June 11, 2014
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