Adahara

...At that time, there was no awareness of hygiene, such as washing vegetables, tableware, and hands thoroughly, and eating a lot of pickled vegetables also contributed to the disaster. In the Edo period, parasitic diseases were also called "adahara," and parasitic diseases were often included in the internal medical illness called "senki." In the Shinsen Byō Soushi, written at the end of the Edo period, there is a picture of a girl suffering from pinworm disease and a man who had eaten raw trout and had a kōsetsuretto ujōchū (diphyllohead tapeworm) protruding from his anus. ...

*Some of the terminology explanations that mention "Adahara" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…当時は野菜や食器･手などを十分に洗浄するような衛生観念もなく，また漬物を多食していたことも災いした。　江戸時代には寄生虫病は〈あだはら〉とも呼ばれ，疝気（せんき）という内科疾患には寄生虫病が多かった。江戸末期の《新撰病双紙》には，蟯虫病に悩む娘と，生のマスを食べてコウセツレットウジョウチュウ(広節裂頭条虫)が肛門から出ている男の姿が描かれている。…

※「あだはら」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報