Chronic pancreatitis causes abdominal pain as well, but the type of pain is different. It is not a sudden and crippling type of pain. Instead, the abdominal pain is sustained and may seem dull, located on the upper abdomen and spreading to the back. The abdominal pain in chronic pancreatitis usually gets worse when the patients eats a large meal or drinks heavily. In some cases, the abdominal pain goes away as the disease progresses, and sometimes there’s no abdominal pain at all.