Vasculitis in Chinese medicine is called gangrene (at first cold and numbness of the limbs, then necrosis of the toe joints, black rot and ulceration, not healing for a long time), which can be divided into cold and dampness obstruction, blood stasis, dampness-heat toxicity, heat and toxicity injury to yin, and qi and yin deficiency. 1. Cold-dampness obstruction syndrome: manifested as the affected toe likes warmth and is afraid of cold, numbness, pale skin, cold, pale tongue, white greasy moss, and fine pulse, use Yanghe Tang to add subtractions. 2. Blood stasis and obstruction syndrome: manifested as soreness and pain of the affected toe, dark red skin color, muscle atrophy, dark red tongue with petechiae, thin white moss, astringent pulse, add and subtract with Tao Hong Si Wu Tang. 3. Dampness-heat toxicity syndrome: manifested by severe pain and swelling of the affected limb, dark purple skin, broken and decayed, dry mouth, constipation, red tongue, yellowish greasy moss, and stringy pulse, add and subtract with Si-Miao Yong-An Tang. 4. Heat and poison injuring yin syndrome: manifested by dry skin, thickened and deformed toenails, dry gangrene, dry mouth, constipation, red tongue, yellow moss, fine pulse, add and subtract Gu Bu Tang. 5. Qi and yin deficiency: manifested as necrotic tissue shedding sores that do not heal for a long time, tiredness and weakness (fatigue and weakness), colorless face, five heart-heat (heat in the heart of the hands and feet, and self-consciousness of the heart and chest heat), red tongue, little moss, thin and feeble pulse, add and subtract with Astragalus and turtle turtle shell soup. If suffering from vasculitis, consult the clinician and follow the doctor’s prescription for medication.