Low circulation or nerve dysfunction due to high blood sugar can trigger cramps, especially at night.

10. Darkened Skin Around the Ankles

A condition called acanthosis nigricans, often linked to insulin resistance, can cause the skin to darken or thicken.

11. Changes in Nail Color

Yellowish or brittle toenails can indicate fungal infections, which are more common in people with elevated blood sugar.

Reduced blood flow can cause hair loss on the lower legs, feet, and toes — often an early circulation warning.