Take Pi (1 qian 2 fen) and Gancao (1 qian). Decoct these herbs in water and take orally. If the patient suffers from constipation, increase the dosage of Dahuang as appropriate. For external application, use Hongbao Dan.
Xuanshen San is indicated for the initial stage of carbuncles and swellings, characterized by intense heat-toxin, alternating chills and fever, irritability, and pain in the four limbs.