Dichroa febrifuga (Chinese: 常山; pinyin:  chángshān ) is a flowering plant in the family Hydrangeaceae. In Indonesiann it is called gigil, alternatively tataruman in Sundanese, ramram in Papua, Hom dong (ฮอมดง) in Thai, but Yai khlang yai (ยายคลังใหญ่) in Nakhon Sri Thammarat, Yai Krang (ยายกรัง) in the South, and Hom Kham (ฮอมคำ) in Lanna (Northern Thai).