For acute pancreatitis symptoms include:
Sudden, intense pains in the middle of the upper abdomen, often beginning 12 to 24 hours after a large meal or a bout of heavy drinking. The pain may radiate to your back.
Nausea or vomiting.
Abdominal distention and tenderness.
Chronic pancreatitis symptoms include:
Intense, long-lasting abdominal pain that may radiate to the back and chest. The pain may be persistent or intermittent.