Feet Skin Discoloration Due to Chronic Venous Insufficiency

This is the most common cause, confirmed by the presence of hemosiderin staining—rust-colored or brown pigment caused by red blood cell leakage from capillaries. To diagnose this, a healthcare provider performs a vascular assessment, typically utilizing a venous duplex ultrasound to evaluate the functionality of vein valves and the efficiency of blood return to the heart. The presence of swelling or varicose veins in conjunction with the staining strongly indicates this condition.

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