It is characterized by alternating episodes of chills and fever, feeling of fullness and oppression in the chest and hypochondria, loss of appetite, dysphoria and nausea.

• 主症为往来寒热,胸胁苦满,嘿嘿不欲饮食,心烦喜呕;病机为“正邪分争”于半表半里部位;用法可以遵“有柴胡证,但见一证便是,不必悉具”之旨。