Treatment Based on Syndrome Differentiation:
1. Syndrome of Obstruction of Collaterals by Cold and Dampness
Main Symptoms: In the infected limbs, there are such symptoms as preference of warmth and aversion to cold, pale skin, ice cold, numbness and pain aggravated by cold, difficult walking, intermittent claudication, accompanied by cold sensation in the extremities of the four limbs, aversion to cold and contraction, slightly red tongue, white and greasy coating, deep and thready pulse.
Therapeutic Methods: Warm meridians, disperse cold, activate blood and dredge collaterals.

2. Stasis of Blood Vessels
Main Symptoms: Aggravated soreness and distension in the local region, heavy and weak steps, obvious motor impairment, dark red color turned from pale colorin the skin of the infected region, more obvious dark red color and aggravated pain in dropping the limb, and even insomnia, dark red tongue, or with purple spots, thready and wiry and hesitant pulse.
Therapeutic Methods: Activate blood, disperse stagnation, dredge collaterals and stop pain.

3. Syndrome of Excessive Dampness and HeatToxin
Main Symptoms: Tumefaction in the infected region, purple dark color in the skin, progressive purple dark color, and rupture and decay, serious pain alleviated in the daytime and aggravated at night to cause insomnia, accompanied by fever, dry mouth, brown urine, red tongue, thin and yellow coating, wiry and rapid pulse.
Therapeutic Methods: Clear away heat, remove dampness, dissolve toxin and disperse stagnation.

4. Syndrome of Yin Impairment due to Heat-Toxin
Main Symptoms: Dry skin in the infected region, exfoliation of hair, thickened and deformed nails, muscular atrophy, dry necrosis in the local region, accompanied by fever aggravated at dusk, aching joints, insomnia,slightly red tongue, scanty coating, thready and rapid pulse.
Therapeutic Methods: Nourish yin, dissolve toxin, activate blood and dredge collaterals.