Which combination of skin findings MOST suggests chronic arterial insufficiency in the lower leg?

• 1 Warm erythematous skin with rapidly spreading borders and fever
• 2 Thickened skin folds with an inability to tent the skin at the toes
• 3 Shiny thin skin with hair loss and thickened brittle nails ✓ 정답
• 4 Brown pigmentation around the ankle with thickened woody skin

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