Abstract:
This article uses historical methodology to analyze primary sources - in this case - the traditional medical treatise concerning the genital diseases, to be named, the book Parahmeha and Turawasa. Apart from this, western medical documents from the 19th century could be counted as primary source for this article. This article tries to explain the changing meaning of the genital diseases from a normal disease according to Thai medical theory to a disease causing by sexual wrongdoing according to western medical theory. Sexual wrongdoing thus was seen as a cause of genital diseases, which in turn were interpreted as a moral decline of the patients. This can explain, how SexuallyTransmitted Disease (STD) or venereal disease turned to be a moral measure in the Thai society around the middle of the 19th century.