Idiopathic proctocolitis

…It is common in adults under 30 years of age, but can also be seen in children and those over 50 years of age. It often becomes chronic and undergoes repeated exacerbations and improvements. In the West, this disease is called idiopathic proctocolitis. There are several theories about the etiology, including infection with bacteria or viruses, enzyme disorders, food allergies, autoimmunity, psychosomatic disorders, and genetic predisposition, but there is no conclusive theory. …

*Some of the terminology that mentions "idiopathic proctocolitis" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…30歳以下の成人に多いが小児や50歳以上のものにもみられ，しばしば慢性となり，悪化と軽快をくり返す。欧米でいう特発性直腸結腸炎idiopathic proctocolitisは本症を指す。病因は，細菌やウイルスなどの感染説，酵素障害説，食餌アレルギー説，自己免疫説，心身症説，遺伝素因説などがあるが，決定的なものはない。…

※「idiopathic proctocolitis」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