A 40-year-old man has a history of chronic alcohol abuse. He develops marked abdominal pain over the last 3 days. On physical examination there is marked tenderness with board-like rigidity of abdominal musculature. His stool is negative for occult blood. Endoscopy reveal the atrophy of villi in small intestine. What is the complication of his illness is he most likely to develop? Explain its causes in detail?