👉 Novistrombidium is a type of bacterium that causes a condition called necrotizing fasciitis, also known as a "sore on the back" or "cold sore." It typically appears on the skin near the joint area and can spread to other parts of the body. The infection can be caused by bacteria such as Staphylococcus aureus, but it is not always associated with staph infections. Symptoms may include redness, swelling, and pain in affected