Those that smoke or have diabetic issues have the very best danger of difficulties from PVD. This is because these chance components cause impaired blood movement.  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。干性坏疽的病变界线清楚。早期干性坏疽的症状为患处表面发白，感觉钝痛和冷。在这个阶段局部改善循环有治愈的可能，其后则需要去除坏死组织... https://sgvasculargrp.com/medical-condition/peripheral-arterial-disease/