Tingling or numbness in hands or feet
Numbness or tingling sensations in the extremities are common and an early sign of diabetes. It first appears as numb-hand, foot or any limb in the morning after you wake up. In later stages, it may progress to feel like a burning sensation.
The reason behind this: Lingering of sugar in the blood causes damage to nerves and nerve endings in the hands and feet. More importantly, reduced circulation in the tips of extremities due to narrowed blood vessels and long distance from the heart causes poor repair processes in the nerves. Both factors contribute to tingling and numbness in hands and feet.