Crusted frostbite - Crusted frostbite

Japanese: 痂皮性凍傷 - かひせいとうしょう
Crusted frostbite - Crusted frostbite

… Frostbite is necrosis caused by the slow freezing of tissue, and is classified into four stages based on the depth of necrosis. The first stage (erythematous frostbite) is necrosis of only the epidermis, showing redness; the second stage (bullous frostbite) is necrosis of part of the dermis, showing blisters; the third stage (crusted frostbite) is necrosis of the entire skin, showing ulcers; and the fourth stage (necrotic frostbite) is necrosis of the muscles and bones below the skin. The first and second stages are called superficial frostbite because they do not leave scars, while the third and fourth stages are called deep frostbite because they cause scars and defects in deep tissue. …

*Some of the terminology that refers to "crusted frostbite" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

… 凍傷は,緩徐に組織が凍結することによって起こる壊死で,壊死の深さの違いから4段階に分類される。すなわち,表皮のみの壊死で発赤を示す第1度(紅斑性凍傷),真皮の一部までの壊死で水疱を形成する第2度(水疱性凍傷),皮膚全層の壊死で潰瘍を形成する第3度(痂皮性凍傷),皮下の筋肉や骨まで壊死に陥る第4度(壊死性凍傷)の4段階である。第1度と第2度は瘢痕を残さないため表在性凍傷,第3度と第4度は瘢痕や深部組織の欠損を生ずるため深在性凍傷と呼ばれることもある。…

※「痂皮性凍傷」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

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