Raynaud's phenomenon, This is a condition that occurs when the blood vessels in your fingers and toes narrow. In most people, this occurs as a result of exposure to cold or emotional stress. The symptoms you experience depend on the duration, frequency, and severity of the vascular constriction.

When your body cuts off blood flow, It automatically cuts off your sense of touch in these areas. This makes you feel numb. The blood flow forces the nerve endings to wake up again; This causes uncomfortable tingling and numbness.