Acute gastric necrosis is a very rare but potentially fatal condition which has been reported in patients with abnormal eating behaviours.We describe the case of a 24-year-old female with a background of Asperger's syndrome, who presented with abdominal pain and gross distension. She underwent an emergency exploratory laparotomy and was found to have a massively distended, necrotic stomach. A total gastrectomy was performed with interval reconstruction planned. This case reports the surgical management of a rarely seen condition and highlights the importance of recognising gastric necrosis and its causes, which include patients with abnormal eating behaviours, the majority of whom are young females. This is the first report highlighting gastric necrosis in a patient with Asperger's syndrome and coincides with a growing recognition of the association between eating disorders and the autistic spectrum. It is also a rare example of patient survival following total gastric necrosis with perforation.