Necrotizing fasciitis is a severe bacterial infection that rapidly destroys soft tissue, including skin, fat, and fascia, which is the connective tissue surrounding muscles. It often begins with a small cut or injury, allowing bacteria to enter the body. Common bacteria involved include Streptococcus and Staphylococcus species. Symptoms typically include intense pain, swelling, and redness in the affected area, often accompanied by fever. Prompt medical treatment is crucial, as the infection can spread quickly and lead to serious complications, including tissue death and systemic illness. Treatment usually involves antibiotics and surgical removal of infected tissue.