The skin with your toes or reduced limbs starting to be chilly and numb, turning crimson after which black, and/or beginning to swell and produce smelly pus, resulting in severe suffering (gangrene) – variations in skin colour can be more difficult to see on brown and black skin 干性坏疽：常见为肢端组织缺血坏死，干枯变黑并向躯干发展，直到血液循环足以防止坏死的地方停止。干性坏疽的病变... https://sgvasculargrp.com/medical-condition/peripheral-arterial-disease/