Herbs that Clear Heat and Dry Dampness

Which of the following herbs kills parasites and stops itching; for genital itching and vaginal discharge?

Ku Shen can be used internally or externally to treat genital itching due to lower-jiao damp-heat.

Source: Bensky, D. (2004). Chinese Herbal Medicine: Materia Medica. Seattle, WA: Eastland Press. pp. 145 [Q396]