What are the two most common etiologies of acute pancreatitis that should be identified early?

• A. Gallstones or alcohol
• B. Viral infection and autoimmune disease
• C. Hypertriglyceridemia and medications
• D. Biliary strictures and infection

Answer: (A)

The main idea here is recognizing the two most frequent triggers of acute pancreatitis so you can address them early and prevent recurrence. Gallstones and alcohol use are by far the most common causes. Gallstones can migrate and transiently obstruct the pancreatic duct or the ampulla, triggering premature activation of pancreatic enzymes and inflammatory pancreatitis. Alcohol contributes through direct toxic effects on acinar cells, increased pancreatic secretions, and oxidative injury, which together promote enzyme activation and inflammation, especially with heavy, ongoing use.

In practice, identifying gallstone pancreatitis points you toward definitive management during the initial admission, such as cholecystectomy, to prevent future episodes. If alcohol-induced pancreatitis is suspected, the focus shifts to abstinence and addressing withdrawal risk, alongside supportive care with fluids and analgesia. While other triggers like viral infections, autoimmune disease, very high triglycerides, certain medications, biliary strictures, or infections can cause pancreatitis, they are less common overall and typically considered after the more frequent causes have been evaluated.