Methods: According the literatures of past dynasties, the research connotations of blackish facial patch in each dynasty were inspected.

方法：根据历代文献，考察各个朝代黧黑斑之研究内涵。

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Results: During the Warring States era, the name, etiology, pathogenesis, diagnosis and treatment of blackish facial patch had preliminary study, only formulae and drugs absence.

结果：早在春秋战国时期，对黧黑斑之病名、病因病机、诊断与治法已有初步研究，唯独方药缺如。

youdao

Results: During the Warring States era, the name, etiology, pathogenesis, diagnosis and treatment of blackish facial patch had preliminary study, only formulae and drugs absence.

结果：早在春秋战国时期，对黧黑斑之病名、病因病机、诊断与治法已有初步研究，唯独方药缺如。

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