Necrotizing Fasciitis: Necrotizing fasciitis is a disease caused by flesh-eating bacteria. Symptoms and signs include pain, localized redness, warmth, and swelling, along with possible fever and chills. Over hours to days, the redness spreads rapidly, and the skin may become purplish in color. Treatment of necrotizing fasciitis should begin immediately. Treatment includes antibiotics and hyperbaric oxygen therapy.