There are many proprietary Chinese medicines that cool the blood and detoxify the toxin to relieve itching, and the common ones are Pimin elimination capsule, Dampness toxin clearing capsule, elimination of silver granules and so on. 1. Pimin elimination capsule. It is composed of bitter ginseng, atractylodes macrocephala, thorns, snakebeds, fengfeng, white fresh skin, cang eu zi, tribulus terrestris. It has the efficacy of clearing heat and detoxification (removing heat and toxicity from the body), cooling blood and relieving itching. This drug can be taken when eczema and urticaria are recognized as wind-heat syndrome, and the uncomfortable symptom of itchy skin occurs. Occasionally, mild diarrhea, nausea, dizziness and other adverse reactions, pregnant women, women in labor are prohibited to use this drug. 2. Dampness Clearing Capsule. It is composed of Radix Rehmanniae Praeparata, Radix Angelicae Sinensis, Salviae Miltiorrhizae, Radix et Rhizoma Ginseng, Fructus Bitter Ginseng, Rhizoma Cicadellariae, Fructus Bupleurum and so on. It has the effect of stopping itching by removing the wind evil that violates the surface of the muscle, and can be used to treat dry skin, flaking, itching and other diseases. Adverse reactions are not clear, pregnant women are forbidden to use this drug. 3. Silver Elimination Granules. It is composed of Radix Rehmanniae Praeparata, Radix Paeoniae Alba, Honeysuckle, Radix et Rhizoma Ginseng and Burdock, etc. It has the efficacy of clearing away heat and cooling the blood (relieving blood heat by clearing away heat), dispelling wind and relieving itching (relieving itching by dispelling wind evils that invade the surface of the muscle), and detoxifying. It can be used to treat conditions such as itching of the skin and visible localized silvery-white scales. Adverse reactions such as abdominal distension, nausea and abdominal pain can be seen, and it is forbidden for pregnant women and those who are allergic to this product. All of the above drugs need to be used correctly under the guidance of a professional physician, do not self-medicate.