Canker sores - Canker sores

Japanese: 疳の虫 - かんのむし

① An insect that is said to cause childhood jiro (cancer). Also, that disease. If you eat too much food, it causes indigestion, and your stomach becomes bloated and you become thin. Or you eat foreign objects such as paper. Spleen jiro (cancer) . [Unpo Shikiyo (1548)] *Kanazoshi, Ukiyo Monogatari (around 1665), vol. 1 "I had a jiro (cancer) and a habit disease, and I was thin and tired." ② An insect that is said to cause tantrums. Also, that tantrum. Kan (cancer). *Fukeizu (1907), <Izumi Kyoka>, vol. 1 "I did you a favor and suppressed the liver worm."

Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information

Japanese:

① 小児の疳の病を起こすといわれる虫。また、その病気。食物をむやみにとって、消化不良を起こし、腹ばかりふくらんでやせる。紙などの異物を食べたりする。脾疳(ひかん)。〔運歩色葉（1548）〕※仮名草子・浮世物語（1665頃）一「疳(カン)の虫(ムシ)、癖(かたかい)の病ありとて、痩疲れたるを」② かんしゃくを起こさせるといわれる虫。また、そのかんしゃく。癇。※婦系図（1907）〈泉鏡花〉前「其処はお前さんに免じて肝の虫を圧へつけた」

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