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Feet turn black in peripheral gangrenous changes, in diseases of arteries which lack to supply blood distally, due to insufficiency.e.g.DIABETIC FOOT .

Feet turn blue in Peripheral cyanosis, in cardiovascular diseases , especially in children,in arterial insufficiency to regulate oxygenated blood to the distal extrimities. E.g. TETRAD OF FALLOT.

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12y ago
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12y ago

Local area bruising and broken capillaries or poor circulation. Gangrene. Frostbite. Mineral deposits from sweating. Dyes from shoes and/or socks. Diabetes. Black-Spot Poison Ivy dermatitis (rare).

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Q: Why do your feet turn blue and black?
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