Congestive edema

...When congestion occurs, the skin and mucous membranes turn dark purple or dark blue due to the large amount of venous blood, and the temperature of the affected area drops and becomes cold. In addition, the liquid components of the blood leak out of the blood vessels, causing edema (this is called congestive edema). With temporary congestion, the damage to tissues and organs is minor, and most recover when the congestion is relieved, but if congestion continues for a long time, the damage becomes severe, and parenchymal cells degenerate and atrophy, and at the same time, the interstitial connective tissue increases and hardens (this is called congestive sclerosis). ...

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…鬱血がおこると，静脈血が多いため皮膚や粘膜は暗紫色または暗青色となり，その部分の温度は下がり冷たくなる。また血液の液体成分が血管外に濾出するため水腫がおこる(これを鬱血性水腫という)。一時的な鬱血では，組織や臓器の障害は軽く，鬱血がなくなると多くは回復するが，鬱血が長く続くと障害は重くなり，実質細胞は変性，萎縮し，同時に間質の結合組織の増加がおこり硬くなる(これを鬱血性硬化という)。…

※「鬱血性水腫」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