Raynaud's disease is a condition that causes some areas of your body -- such as your fingers, toes, tip of your nose and your ears-- to feel numb and cool in response to cold temperatures or stress. It's a disorder of the blood vessels that supply blood to your skin. During a Raynaud's attack, these arteries narrow, limiting blood circulation to affected areas. In TCM, this disease is included in the Bi syndrome, cold extremities, pain of the limbs or numbness of limbs, which is treated with herbs for warming meridians and expelling cold evil.