The formula of medicated bath includes 30g of Sophora flavescens, 30g of Radix Rehmanniae, 30g of Rhizoma Atractylodis, 30g of Fructus Cnidii, 30g of Kochia scoparia, 20g of Stemona, 20g of Radix Angelicae Dahuricae, 30g of Cortex Phellodendri, 20g of Radix Saposhnikoviae, 20g of Zingiberis Rhizoma, 20g of Flos Lonicerae, 20g of Flos Chrysanthemi Indici, 20g of Glycyrrhrizae Radix, and 0g of rhubarb10g. Boil in 3000 ml water for 20 minutes, filter to remove residue, air dry to about 38℃, and bathe the affected area. Wash for 30 ~ 50 minutes each time, every other day 1 time. The heavier start is one day 1 time, and after 1 time, it is changed to the next day 1 time. Don't overheat the water when taking a bath to prevent the liquid medicine from pouring into your ears.

In this prescription, Sophora flavescens is the main medicine for treating exudation, itching and swelling skin diseases, and has the functions of clearing away heat and toxic materials, killing insects and relieving itching; Flos Lonicerae and Flos Chrysanthemi Indici can clear away heat and toxic materials, reduce swelling and dissipate stagnation; Cortex Phellodendri, Rhizoma Atractylodis, Radix Angelicae Dahuricae and Radix Saposhnikoviae can dispel dampness and dispel wind; Fructus Cnidii, Fructus Kochiae and Radix Stemonae can kill insects and relieve itching; Dry ginger warm powder, compatible with speranskia tuberculata, helps the skin absorb drugs; Radix Rehmanniae and Radix et Rhizoma Rhei can promote blood circulation, remove blood stasis, clear heat, and help skin lesions to subside. After using this medicated bath, it can obviously relieve itching symptoms and promote the recovery of eczema.