<unk>  is a medical condition that involves necrosis and ischemia of a body tissue, mostly occurring in the digits or extremities. It usually appears as a black discoloration and sloughing of tissues. There are three main types of<unk> , namely wet<unk> , dry<unk> , and gas<unk> .
Gangrene
Blister
Athlete's foot
Sunburn
Calcinosis cutis
Ulerythema
Cutaneous abscess
Platinosis