What are the dangers of pancreatitis? Usually the course of pancreatitis can be divided into three stages: 1. The acute reaction period from the onset to about 2 weeks, shock, respiratory failure, renal failure, encephalopathy and other major serious complications can occur. During this period, patients need a lot of rehydration and pancreatic enzyme support therapy to reduce the chemical stimulation of pancreatic enzymes in patients. 2, systemic infection period about 2 weeks to 2 months after the onset of the disease, the main performance of systemic bacterial infection, deep fungal infection or dual infection. During this period, patients need to strengthen anti-infection treatment. 3, residual infection period after the onset of 2-3 months, mostly seen in post-operative patients late special performance mainly, systemic malnutrition, intra-abdominal residual infection, abdominal drainage is not open, sinus tract for a long time, some patients with gastrointestinal fistula, etc.. At this stage, patients need to strengthen nutritional support therapy. In addition, the common local complications of acute pancreatitis are mainly manifested as the following hazards: 1. Acute fluid accumulation pancreatitis in the early stage, fluid gathered in the pancreas or peripancreatic. 2, pancreatic and peripancreatic tissue necrosis pancreatic parenchyma diffuse or focal necrosis, accompanied by peripancreatic fat necrosis. 3, Acute pancreatic pseudocyst acute pancreatitis after the formation of fibrous tissue or granulation cyst wall encapsulated pancreatic fluid accumulation. 4, pancreatic abscess acute pancreatitis peripancreatic encapsulated accumulation of pus.