Allergic vasculitis is generally categorized as “purpura” in Chinese medicine according to its symptoms. Specific treatment requires a professional doctor to identify the evidence, the effect varies from person to person, and it is not possible to generalize whether it can be cured. This disease is mainly caused by the external wind, heat, dampness, poison and other evil or food poisoning, medicine poison injury, resulting in congestion of the meridians, fire and heat burning, forcing the blood to travel, or physical endowment is not enough (congenital constitution and function is not good), dietary disorders, excessive fatigue, seven emotional injuries, or the disease is a long time, the depletion of qi and blood, resulting in a deficiency of yin and fire (Yin and essence deficit, the emergence of hyperactive), burned the veins, or qi deficiency does not regulate the blood outside the overflow veins, lingering It is difficult to heal. Therefore, the treatment is generally based on clearing away heat and dampness, cooling the blood, strengthening the spleen and removing blood stasis. For example, you can use Huang Kwai Capsules, function of clearing dampness and heat, detoxification and swelling. It is suitable for the evidence of internalized dampness and heat. Pregnant women should not take. Adverse reactions such as epigastric distension and discomfort, nausea and vomiting can be seen. The use of Chinese medicine needs to be under the guidance of a Chinese medicine practitioner’s diagnosis, and not blindly use the medicine on your own.