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Pancreatitis is inflammation of the pancreas. The pancreas is a long, flat gland that sits tucked behind the stomach in the upper abdomen. The pancreas produces enzymes that help digestion and hormones that help regulate the way your body processes sugar (glucose).
Pancreatitis can occur as acute pancreatitis — meaning it appears suddenly and lasts for days. Some people develop chronic pancreatitis, which is pancreatitis that occurs over many years.
Mild cases of pancreatitis improve with treatment, but severe cases can cause life-threatening complications.
Signs and symptoms of pancreatitis may vary, depending on which type you experience.
Acute pancreatitis signs and symptoms include:
- Upper abdominal pain
- Abdominal pain that radiates to your back
- Tenderness when touching the abdomen
- Rapid pulse
Chronic pancreatitis signs and symptoms include:
- Upper abdominal pain
- Abdominal pain that feels worse after eating
- Losing weight without trying
- Oily, smelly stools (steatorrhea)
When to see a doctor
Make an appointment with your doctor if you have acute onset or persistent abdominal pain. Seek immediate medical help if your abdominal pain is so severe that you can’t sit still or find a position that makes you more comfortable.
Pancreatitis occurs when digestive enzymes become activated while still in the pancreas, irritating the cells of your pancreas and causing inflammation.
With repeated bouts of acute pancreatitis, damage to the pancreas can occur and lead to chronic pancreatitis. Scar tissue may form in the pancreas, causing loss of function. A poorly functioning pancreas can cause digestion problems and diabetes.
Conditions that can lead to acute pancreatitis include:
- Certain medications
- High triglyceride levels in the blood (hypertriglyceridemia)
- High calcium levels in the blood (hypercalcemia), which may be caused by an overactive parathyroid gland (hyperparathyroidism)
- Pancreatic cancer
- Abdominal surgery
- Cystic fibrosis
- Injury to the abdomen
Endoscopic retrograde cholangiopancreatography (ERCP), a procedure used to treat gallstones, also can lead to pancreatitis.
Sometimes, a cause for pancreatitis is never found. This is known as idiopathic pancreatitis.
Factors that increase your risk of pancreatitis include:
- Excessive alcohol consumption. Research shows that heavy alcohol users (people who consume four to five drinks a day) are at increased risk of pancreatitis.
- Cigarette smoking. Smokers are on average three times more likely to develop chronic pancreatitis, compared with nonsmokers. The good news is quitting smoking decreases your risk by about half.
- Obesity. You’re more likely to get pancreatitis if you’re obese.
- Diabetes. Having diabetes increases your risk of pancreatitis.
- Family history of pancreatitis. The role of genetics is becoming increasingly recognized in chronic pancreatitis. If you have family members with the condition, your odds increase — especially when combined with other risk factors.
Pancreatitis can cause serious complications, including:
- Kidney failure. Acute pancreatitis may cause kidney failure, which can be treated with dialysis if the kidney failure is severe and persistent.
- Breathing problems. Acute pancreatitis can cause chemical changes in your body that affect your lung function, causing the level of oxygen in your blood to fall to dangerously low levels.
- Infection. Acute pancreatitis can make your pancreas vulnerable to bacteria and infection. Pancreatic infections are serious and require intensive treatment, such as surgery to remove the infected tissue.
- Pseudocyst. Acute pancreatitis can cause fluid and debris to collect in cystlike pockets in your pancreas. A large pseudocyst that ruptures can cause complications such as internal bleeding and infection.
- Malnutrition. Both acute and chronic pancreatitis can cause your pancreas to produce fewer of the enzymes that are needed to break down and process nutrients from the food you eat. This can lead to malnutrition, diarrhea and weight loss, even though you may be eating the same foods or the same amount of food.
- Diabetes. Damage to insulin-producing cells in your pancreas from chronic pancreatitis can lead to diabetes, a disease that affects the way your body uses blood sugar.
- Pancreatic cancer. Long-standing inflammation in your pancreas caused by chronic pancreatitis is a risk factor for developing pancreatic cancer.