Introduction to Necrotizing Fasciitis Necrotizing fasciitis is a rare but concerning bacterial infection that usually develops within deep tissues and spreads rapidly between tissues. The bacteria can quickly destroy fascia, skin, muscle tissue and other internal organs, causing serious life-threatening consequences. Necrotizing fasciitis usually enters the body through a tiny cut or wound, grows and spreads to surrounding tissue. In many cases, it can be prevented if prompt action is taken to correct