Amaranthus can be used to treat eczema. In Chinese medicine, it can be used to clear heat and detoxify the blood, and in Western medicine, it can be used to constrict the capillaries and be an anti-inflammatory agent. It can be used orally as well as topically with other Chinese or Western medicines for the purpose of treating eczema. Horsetail with Phellodendron and Qinpi decoction followed by cold moist compresses for 20 minutes twice a day can be used externally to treat eczema. It can also be combined with Chinese herbs that clear heat and detoxify toxins and promote dampness for the purpose of treating eczema. For example, it can be combined with oral medications such as gentian herb, scutellaria baicalensis, daphyllum leaf, gypsum, psyllium, liuyi san, poria, etc. for the purpose of treating eczema by decocting water and taking it orally twice a day.