There are many causes of severe pancreatitis, including the following: The first type is alcoholic pancreatitis, which is caused by heavy drinking leading to pancreatic damage. The second type is pancreatitis due to overeating, where consuming large amounts of food, especially high-fat foods, leads to excessive secretion by the pancreas, resulting in pancreatitis. Another type is biliary pancreatitis, caused by small gallstones from the gallbladder falling into the bile duct. Stones lodged at the opening of the pancreatic and bile ducts cause a secretion disorder in the pancreas, leading to pancreatitis. There is also hyperlipidemic pancreatitis, seen in pregnant women and patients with familial hyperlipidemia. Hyperlipidemia causes blockage of the pancreatic duct, thereby triggering an episode of pancreatitis. Another is traumatic pancreatitis, which is directly caused by external forces leading to compression or contusion injuries of the pancreas. Lastly, there is drug-induced pancreatitis, which occurs when certain medications have a direct toxic effect on the pancreas, causing damage to the pancreatic cells.