Symptoms · 28 October 2026 · 7 min read

Pancreatitis: symptoms, causes and when it is an emergency

Pancreatitis is inflammation of the pancreas. Acute pancreatitis shows up as pain in the upper belly, often spreading to the back, with nausea and vomiting, and it usually needs hospital care. Severe or worsening pain, fever, a fast heartbeat, trouble breathing or yellow skin are reasons to get emergency help right away, not to wait it out at home.

In short

Pancreatitis is inflammation of the pancreas, a gland behind the stomach that makes digestive juices and hormones such as insulin.
Acute pancreatitis typically causes pain in the upper belly that may spread to the back, plus nausea, vomiting and sometimes fever. It often gets worse after eating.
The two leading causes are gallstones and heavy alcohol use. Some medicines, high blood fats, injury and genetic conditions can also trigger it.
Treat severe belly pain as an emergency: call 911 for pain that is strong or getting worse, especially with vomiting, fever, a racing heart, trouble breathing or yellow skin.
Diagnosis rests on your symptoms, blood tests for the enzymes amylase and lipase, and imaging. Treatment usually means a stay in the hospital with fluids, pain control and care for the underlying cause.

What pancreatitis is

The pancreas sits behind the stomach and makes enzymes that digest food, along with hormones such as insulin. In pancreatitis, those digestive enzymes begin to digest the pancreas itself, which causes swelling and inflammation.

There are two forms. Acute pancreatitis starts suddenly and, in most people, improves within a few days of treatment. Chronic pancreatitis is long-term damage that keeps getting worse and can scar the gland. This article focuses on the acute form, because it is the one that can become an emergency.

Cleveland Clinic reports about 275,000 hospital stays a year in the United States for acute pancreatitis, and roughly 8 in 10 patients go home after a few days. It is common, it is serious, and most people recover fully with proper care.

Symptoms: what the pain feels like

Pain in the upper abdomen that may start suddenly or build up, can feel sharp, and may spread to the back or sides.
Pain that often gets worse after eating, moving or lying down, and eases a little when you lean forward or draw your knees up.
Nausea and vomiting, fever, a fast heartbeat, and a swollen or tender belly.
Lightheadedness and fast breathing in more serious cases.

The NHS notes that the pain can look like appendicitis or a stomach ulcer, which is one reason you should not diagnose it yourself. Chronic pancreatitis tends to bring a different picture: ongoing upper belly pain, diarrhea, greasy and foul-smelling stools, and weight loss.

Causes and risk factors

In acute pancreatitis the most common cause is gallstones. A stone can slip out of the gallbladder and block the duct that drains the pancreas, which is called gallstone pancreatitis. Heavy alcohol use is the other leading cause.

Some medicines, including certain steroids, heart medicines and epilepsy medicines.
Very high blood triglycerides or high blood calcium.
Injury to the abdomen, or a procedure such as ERCP, which uses an endoscope and X-rays to treat the bile and pancreatic ducts.
Viral or parasitic infections, lupus, mumps, and pancreatic cancer.
Genetic disorders of the pancreas. In some people, no cause is ever found.

Cleveland Clinic lists smoking, obesity, high triglycerides and a family history of pancreatitis among the factors that raise risk.

When to get help

Sudden, severe belly pain that does not go away, or that keeps returning, needs medical attention the same day. If you can reach a clinician quickly, call your primary care provider or go to urgent care.

Red flags, call 911 now: severe belly pain or pain that is getting worse; pain spreading to the back; repeated vomiting; fever or chills; a fast heartbeat; trouble breathing; fainting or severe dizziness; yellow skin or eyes; blue or bruised skin around the navel or the sides of the belly. Untreated, these problems can be fatal.

Do not drive yourself to the hospital.
Bring a list of the medicines you take, including supplements.
Tell the team about gallstones, alcohol use and any recent procedure.

How doctors confirm it

A doctor starts with your medical history and a physical exam, then orders tests. They also rule out conditions that feel similar, such as a peptic ulcer.

Blood tests for amylase and lipase, two pancreatic enzymes, plus blood sugar, blood fats and signs of infection or inflammation.
Abdominal ultrasound, which can find gallstones.
CT scan of the pancreas, gallbladder and bile ducts.
MRCP, an MRI-based scan of the same structures, and endoscopic ultrasound, in which a thin tube with an ultrasound attachment passes down the throat.
Stool tests for fat malabsorption, mainly when chronic pancreatitis is suspected.

Cleveland Clinic explains that for acute pancreatitis the diagnosis rests on upper abdominal pain, raised pancreatic enzymes, especially lipase, and imaging showing inflammation. Imaging may be skipped when symptoms and blood tests are clear. Your clinician interprets the numbers, so do not judge your own results.

Treatment in general terms

Acute pancreatitis is treated in the hospital. The basics are intravenous fluids to treat dehydration, pain medicine, and nutrition. People who cannot eat may be fed through a tube or a vein, and a low-fat diet is usually advised once eating is possible. Antibiotics are used only if the pancreas becomes infected.

The cause is treated too. When gallstones are to blame, doctors may remove them with ERCP, and surgery to remove the gallbladder is usually done during the hospital stay or soon after. With heavy drinking, stopping alcohol is part of the plan. Severe cases can need intensive care, drainage of fluid collections, or removal of damaged tissue.

The NHS says most people start to improve within a week and leave the hospital after 5 to 10 days, while severe cases take longer. All treatment is chosen and prescribed by the medical team.

Recovery and preventing another attack

Fix the cause.After gallstone pancreatitis, removing the gallbladder greatly lowers the chance of another gallstone attack.
Cut back on alcohol.Drinking less, or not at all, lowers the risk of another episode. Ask your clinician for help if that is hard.
Stop smoking.Smoking is a risk factor and quitting helps prevent recurrence.
Eat lighter.A healthy, low-fat diet is recommended. Keep your weight steady and avoid very fast weight loss.
Keep follow-up visits.A repeat episode can happen, and frequent attacks can lead to chronic pancreatitis, so tell your clinician if pain returns.

Possible complications

Most people recover completely, but acute pancreatitis can be life-threatening, which is why hospital monitoring matters. Possible complications include fluid-filled cysts, pancreatic necrosis (death of pancreatic tissue) with a risk of infection, and organ failure in severe cases. Cleveland Clinic puts the risk of death in people with organ failure at about 1 in 5.

Chronic pancreatitis can cause diabetes and trouble absorbing fat and vitamins, and it needs long-term care from a gastroenterologist.

Questions and answers

Can pancreatitis go away on its own?

Mild acute pancreatitis can clear up in a few days, but only with medical care. Do not try to wait out severe belly pain at home, because you cannot tell mild from severe by how it feels.

Is the pain on the left, right or middle?

Usually in the upper belly, but the NHS says it can sit in the middle, on one side or across the whole belly. That is why it is mistaken for an ulcer or appendicitis.

Does pancreatitis come only from drinking?

No. Gallstones are the most common cause of acute pancreatitis, and some people have a medicine, high blood fats, an injury or a genetic cause. Never assume the reason from the pain alone.

Can it come back?

Yes. Cleveland Clinic gives a recurrence rate of about 5 in 100 after an acute episode. Treating the cause and avoiding alcohol and smoking are the main ways to lower it.

Should I eat or drink while I wait for help?

Seek care first. In the hospital the team decides when you can eat, and may give fluids and nutrition through a vein until then.

Sources

Sources checked on 28 October 2026.