Morphine doesn't even cut the pain. It can last a long time too. :-)
Here is a quick link:
http://digestive.niddk.nih.gov/ddiseases/pubs/pancreatitis/<snip>
I like this part....
Acute pancreatitis is usually caused by gallstones or by drinking too much alcohol, but these aren't the only causes. If alcohol use and gallstones are ruled out, other possible causes of pancreatitis should be carefully examined so that appropriate treatment--if available--can begin.
Pancreatitis
On this page:
Acute Pancreatitis
Chronic Pancreatitis
Pancreatitis in Children
Points to Remember
Hope Through Research
For More Information
Pancreatitis is an inflammation of the pancreas. The pancreas is a large gland behind the stomach and close to the duodenum. The duodenum is the upper part of the small intestine. The pancreas secretes digestive enzymes into the small intestine through a tube called the pancreatic duct. These enzymes help digest fats, proteins, and carbohydrates in food. The pancreas also releases the hormones insulin and glucagon into the bloodstream. These hormones help the body use the glucose it takes from food for energy.
Normally, digestive enzymes do not become active until they reach the small intestine, where they begin digesting food. But if these enzymes become active inside the pancreas, they start "digesting" the pancreas itself.
Acute pancreatitis occurs suddenly and lasts for a short period of time and usually resolves. Chronic pancreatitis does not resolve itself and results in a slow destruction of the pancreas. Either form can cause serious complications. In severe cases, bleeding, tissue damage, and infection may occur. Pseudocysts, accumulations of fluid and tissue debris, may also develop. And enzymes and toxins may enter the bloodstream, injuring the heart, lungs, and kidneys, or other organs.
Acute Pancreatitis
Some people have more than one attack and recover completely after each, but acute pancreatitis can be a severe, life-threatening illness with many complications. About 80,000 cases occur in the United States each year; some 20 percent of them are severe. Acute pancreatitis occurs more often in men than women.
Acute pancreatitis is usually caused by gallstones or by drinking too much alcohol, but these aren't the only causes. If alcohol use and gallstones are ruled out, other possible causes of pancreatitis should be carefully examined so that appropriate treatment--if available--can begin.
Symptoms
Acute pancreatitis usually begins with pain in the upper abdomen that may last for a few days. The pain may be severe and may become constant--just in the abdomen--or it may reach to the back and other areas. It may be sudden and intense or begin as a mild pain that gets worse when food is eaten. Someone with acute pancreatitis often looks and feels very sick. Other symptoms may include
swollen and tender abdomen
nausea
vomiting
fever
rapid pulse
Severe cases may cause dehydration and low blood pressure. The heart, lungs, or kidneys may fail. If bleeding occurs in the pancreas, shock and sometimes even death follow.