Atahara

...In premodern Japan, it was a common name for painful internal diseases that could not be clearly diagnosed at the medical level of the time, and was lumped together as if they were a single syndrome. It was simply called "colic" or "atahara." In the Heian period, "Ishinpo" states, "colic is painful. Sometimes the patient has abdominal pain and is unable to urinate or defecate. Sometimes the hands and feet are cold and the pain around the navel causes white sweat. Sometimes the cold air rises and pierces the heart and abdomen, causing heartache or intestinal pain." In the Edo period, "Tankai" states that the white, thin worms that come out during defecation are "senki no mushi," and according to this, colic was a parasitic disease. ...

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…近代以前の日本の病名で，当時の医学水準でははっきり診別できないまま，疼痛をともなう内科疾患が，一つの症候群のように一括されて呼ばれていた俗称の一つ。単に〈疝〉とも，また〈あたはら〉ともいわれ，平安時代の《医心方》には，〈疝ハ痛ナリ，或ハ小腹痛ミテ大小便ヲ得ズ，或ハ手足厥冷シテ臍ヲ繞（めぐ）リテ痛ミテ白汗出デ，或ハ冷気逆上シテ心腹ヲ槍（つ）キ，心痛又ハ撃急シテ腸痛セシム〉とある。江戸時代の《譚海》には，大便のとき出てくる白い細長い虫が〈せんきの虫〉である，と述べられているが，これによると疝気には寄生虫病があった。…

※「あたはら」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