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How can lupus cause purplish spots on lower legs?

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These happen when the blood vessels in your skin become inflamed and damaged. They may 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.

From: How Lupus Affects Your Skin WebMD Medical Reference

SOURCES:

Brigham and Women's Hospital: "Lupus and the Skin."

Johns Hopkins Lupus Center: "Skin."

Lupus Foundation of America: "How does lupus affect the skin?"

S.L.E. Lupus Foundation: "Lupus and Your Skin."

Reviewed by Stephanie S. Gardner on June 01, 2018

SOURCES:

Brigham and Women's Hospital: "Lupus and the Skin."

Johns Hopkins Lupus Center: "Skin."

Lupus Foundation of America: "How does lupus affect the skin?"

S.L.E. Lupus Foundation: "Lupus and Your Skin."

Reviewed by Stephanie S. Gardner on June 01, 2018

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How can lupus cause color changes in fingers and toes?

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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