Ink and brush drawing from a handwritten copy of the anonymous text Dingchuang yaojue (Essential Art of Boils), executed in 1874 (13th year of the Tongzhi reign period of the Qing dynasty). It indicates the disease location for yi ding (boil on the lower cheek). This is also known as shuang qian (double pincers). It generally occurs on the lower cheek, close to the jaw. It should not be confused with mumps. The preferred therapy is needling and opening (tiaoci), at locations including yintang (Hall of Seals), jianjing (Shoulder Well) and ermen (Ear Portal); and internal treatment with qingliang li ge tang (cooling and diaphragm-promoting decoction) and qingliang gan-jie tang (cooling decoction of liquorice and Platycodon grandiflorum) administered orally.
