Dry gangrene most commonly develops as a consequence of arteriosclerosis, a buildup of fatty substances in your artery partitions. COVID-19 complications: Lots of people who experienced COVID-19 and skilled blood clotting concerns later created dry gangrene within their fingers and toes. More study is necessary to understand this connection totally. https://www.sgvascularctr.com/what-is-a-gangrene/