noun
carbuncle; deep skin abscess
Medical term for a deep, often multi-headed skin infection; compare 癰 (よう) which is a larger, more severe carbuncle. Rare in everyday conversation.
See also: 癰
糖尿病患者は疽を発症しやすい。
Diabetic patients are prone to developing carbuncles.
The kanji 疽 is composed of 疒 (sickness radical) and 且 (phonetic component), indicating a disease-related meaning. The reading そ is the on'yomi.