Necrotizing soft tissue infections (NSTIs), such as necrotizing fasciitis and myonecrosis, are swiftly progressive, life-threatening infections causing necrosis of skin, subcutaneous tissue, fascia, or muscle. Known since the fifth century, NSTIs have a mortality rate of 8–17% and pose diagnostic challenges due to nonspecific early symptoms (redness, warmth, pain) mimicking milder infections. Risk factors include obesity, diabetes, immunosuppression, and minor trauma, but healthy individuals can also be affected. The Laboratory Risk Indicator for Necrotizing Fasciitis (LRINEC) score and CT imaging aid diagnosis, with surgical exploration as the definitive step. Treatment involves aggressive surgical debridement, broad-spectrum antibiotics, and intensive care for sepsis. Adjunctive therapies like hyperbaric oxygen and other upcoming treatments, more studies are required. Wound care with negative pressure wound therapy and advanced tissue substitutes, plus tailored rehabilitation, are crucial for recovery. Early diagnosis and intervention are critical to improve outcomes.