<p>Necrotising fasciitis was first described more than a century ago, however, its diagnosis still represents a challenge for clinicians and the condition carries a high mortality rate. The management of necrotising fasciitis requires prompt diagnosis, early surgical excision and proper coordination between the multidisciplinary team to achieve the best outcome for the patient. This paper reviews the diagnostic tools used in identifying necrotising soft tissue infections as well as examining the microbiology, management and prognosis.</p>