Raynaud's Phenomenon
Overview
Mai Bi (Raynaud's Phenomenon) belongs to the Bi syndrome category in TCM. It is characterized by triphasic color changes (pallor, cyanosis, rubor) of the extremities, especially the fingers, triggered by cold or emotional stress, accompanied by numbness, tingling, and coldness. The disease is located in the vessels and is closely related to the heart, liver, spleen, and kidney. The basic pathogenesis involves cold congealing the blood vessels, qi stagnation and blood stasis, or yang qi deficiency failing to warm, or liver qi stagnation with poor blood circulation. Clinical differentiation should distinguish the predominance of cold congelation, qi stagnation, yang deficiency, and blood stasis. Treatment principles include warming the meridians and dispersing cold, moving qi and invigorating blood, and warming yang to unblock the vessels.
Pattern differentiation (clinical patterns)
Cold Congealing the Blood Vessels
Fingers become pale and cyanotic upon exposure to cold, with cold pain and numbness that lessen with warmth, aversion to cold and cold limbs, pale tongue with white coating, and a deep, thin, choppy pulse.
Warm the meridians and disperse cold; invigorate blood and unblock the vessels.
Qi Stagnation and Blood Stasis
After emotional stress or cold stimulation, the fingertips become cyanotic with distending and stabbing pain, dark red skin color, chest oppression and frequent sighing, dark purple tongue with ecchymosis, and a wiry, choppy pulse.
Move qi and invigorate blood; transform stasis and unblock the collaterals.
Yang Deficiency with Cold Congelation
Pale and cold fingertips worsening with cold, aversion to cold and preference for warmth, soreness and weakness of the lower back and knees, fatigue and lack of strength, clear and profuse urine, pale and swollen tongue with white coating, and a deep, slow, weak pulse.
Warm yang and disperse cold; nourish blood and unblock the vessels.
Connections
Daily care & prevention
Keep the extremities warm, avoid contact with cold water and cold environments; wear gloves and thick socks in winter. Regulate emotions and avoid mental tension and emotional excitement. Quit smoking and avoid caffeine and other substances that stimulate vasoconstriction. Moderately exercise the fingers with fist-clenching and hand-rubbing to promote qi and blood circulation. Diet should be warm; consume ginger, cinnamon, mutton, and other warm-natured foods in moderation; avoid raw, cold, and cooling foods.
When to seek medical care
If ulcers, gangrene, severe pain, or persistent color changes appear on the fingertips, it indicates worsening condition and requires prompt medical attention. Systemic symptoms such as fever, joint swelling and pain, rash, and myalgia, or sudden pallor and coldness of one limb, should raise suspicion of connective tissue disease or vascular occlusion and require further examination.