Acute pancreatitis means inflammation of the pancreas that develops quickly. The main symptom is tummy (abdominal) pain. It usually settles in a few days but sometimes it becomes severe and very serious. The most common causes of acute pancreatitis are gallstones and drinking a lot of alcohol.
Chronic pancreatitis affects the organ known as the pancreas, which is located below your stomach. The pancreas produces enzymes, which help to digest your food, and hormones such as insulin, which regulates the level of sugar in your bloodstream.