Pancreatitis refers to the inflammation of pancreas that may cause severe abdominal pain. Although there are several reasons for the development of this medical condition, gallstones are a major reason behind somebody having pancreatitis. Gallstones are formed in human gallbladder. These mostly pass out to a person’s duodenum through the bile duct. However, the problem of pancreatitis occurs when these gallstones sometimes are stuck while passing through the bile duct. These can also be stuck at a place where the bile duct opens in the duodenum. When this blockage happens, pancreatic enzymes are unable to travel and cannot reach the small intestine.