Pancreatitis is inflammation of the pancreas that usually causes severe upper-abdominal pain, often spreading to the back, with nausea and vomiting. The two most common causes are gallstones and heavy alcohol use. Acute pancreatitis needs prompt hospital care, while long-term (chronic) pancreatitis requires ongoing management. Sudden, severe abdominal pain should never be ignored.
The pancreas is a small but vital organ tucked behind the stomach, and when it becomes inflamed the result — pancreatitis — can range from a short, painful illness to a serious, even life-threatening emergency. Most people have never given the pancreas a second thought until something goes wrong, yet this quiet organ plays two essential roles in the body, helping to digest food and to control blood sugar. When it becomes inflamed, both jobs can be disrupted, and the pain can be intense. Because the condition can occasionally escalate quickly, recognising the warning signs early can make a real difference to how it is treated and to how well a person recovers. This guide explains what pancreatitis is, what causes it, how doctors diagnose and treat it, and — crucially — which symptoms mean you should seek help without delay. Understanding the basics can help you protect your own health, look after loved ones, and know with confidence when a hospital visit simply cannot wait.
What is pancreatitis, and what does the pancreas do?
Pancreatitis is inflammation of the pancreas, the organ behind the stomach that produces digestive enzymes and the hormones that control blood sugar, including insulin. Normally these powerful enzymes only become active in the intestine. In pancreatitis they activate too early, inside the pancreas itself, and begin to irritate and damage the gland, causing pain and swelling.
The pancreas has two essential jobs. First, it makes digestive enzymes that are released into the small intestine to break down the fats, proteins, and carbohydrates in your food. Second, it produces hormones — most importantly insulin and glucagon — that regulate the level of sugar in your blood. It sits deep in the upper abdomen, which is partly why its pain is often felt in the centre of the tummy and through to the back. Pancreatitis develops when the digestive enzymes, which are meant to switch on only after they reach the intestine, are triggered prematurely within the pancreas. In effect, the gland begins to digest itself, which sets off inflammation, swelling, and pain, and in more serious cases the inflammation can affect nearby tissues and other organs. This is why the illness is taken seriously and why medical assessment is so important, even when an attack seems to be settling on its own. Doctors recognise two broad forms of the condition. Acute pancreatitis comes on suddenly and, in most cases, settles within days to a week or two with appropriate care, although a minority of episodes become severe and dangerous and require intensive treatment. Chronic pancreatitis is long-lasting inflammation that gradually scars the gland over months and years, slowly impairing its ability to make enzymes and hormones; this can lead to difficulty digesting food, persistent pain, weight loss, and, in some people, to diabetes. The two forms are related, because repeated attacks of acute pancreatitis can, over time, contribute to the chronic form, which is one reason why treating the underlying cause after a first attack matters so much. Both forms deserve medical attention, but they are managed differently. You can read a fuller explanation of the condition, its complications, and its management in our overview of pancreatitis, which expands on the practical guidance offered here.
What are the warning signs and symptoms of pancreatitis?
The hallmark of pancreatitis is severe pain in the upper abdomen that often spreads through to the back. The pain may come on suddenly and intensely or build more gradually, and it is frequently accompanied by nausea, vomiting, a bloated or tender abdomen, and fever. Symptoms often feel worse after eating, especially after fatty meals.
- Severe pain in the upper abdomen, often radiating straight through to the back
- Nausea and vomiting that may not relieve the pain
- A tender, swollen, or bloated abdomen
- Fever, chills, and a rapid heartbeat
- Pain that eases a little when sitting forward but worsens when lying flat or after eating fatty food
- In chronic cases, greasy, foul-smelling stools that are hard to flush, and gradual weight loss
What causes pancreatitis?
By far the two most common causes of pancreatitis are gallstones and heavy alcohol use. A gallstone can block the duct where the pancreas drains, trapping enzymes inside the gland, while alcohol has a direct toxic effect on pancreatic tissue. Our guide to gallstones explains that connection in more detail. Several other, less common causes also exist.
- Gallstones blocking the pancreatic or bile duct where it drains into the intestine
- Heavy or long-term alcohol consumption, one of the leading causes worldwide
- Very high levels of fats (triglycerides) in the blood
- Certain medicines, viral infections, or a direct injury to the abdomen
- High blood calcium, or occasionally as a complication after a procedure on the bile ducts (ERCP)
- Inherited (genetic) tendencies, autoimmune conditions, or, in some cases, no clear cause found despite testing
How is pancreatitis diagnosed?
Doctors diagnose pancreatitis from your symptoms, a physical examination, and blood tests that measure pancreatic enzymes such as amylase and lipase, which rise sharply during an attack. Imaging — an ultrasound scan, and sometimes a CT or MRI scan — helps confirm the diagnosis, look for gallstones, assess how severe the inflammation is, and check for any complications.
How is pancreatitis treated?
Most people with acute pancreatitis are treated in hospital with fluids given through a drip, pain relief, anti-sickness medicine, and careful monitoring while the pancreas recovers. Eating is often paused briefly and then reintroduced gradually. Treatment also addresses the underlying cause — for example, removing the gallbladder when gallstones are responsible, or supporting alcohol reduction.
The mainstay of treatment for an acute attack is supportive care that gives the inflamed gland a chance to settle. This usually means admission to hospital for intravenous fluids to keep you well hydrated, medicines to control pain and nausea, and close observation of your vital signs and blood tests. Early on, the team will also assess how severe the attack is likely to be, since this guides how closely you need to be watched. Good nutrition supports recovery, so food is often withheld only for a short time and then reintroduced as symptoms improve, sometimes starting with fluids or a low-fat diet, and in more severe cases feeding may be given through a fine tube. Just as important is treating whatever triggered the attack. When gallstones are the cause, removing the gallbladder — an operation called a cholecystectomy, usually performed with keyhole surgery — is commonly recommended to prevent further episodes, and occasionally a procedure to clear a stone from the bile duct is needed first. When alcohol is responsible, stopping drinking and getting support to stay stopped is central to recovery and to preventing long-term damage, and your team can help you find that support. Very high blood triglycerides or high calcium are treated in their own right to lower the risk of another attack. Severe pancreatitis, or complications such as infected or dead pancreatic tissue and collections of fluid called pseudocysts, may require intensive care, antibiotics, and, in some cases, specialised procedures to drain or remove the affected tissue. These are usually handled in a step-by-step way, starting with the least invasive options, and are best managed by a team experienced in HPB (liver, pancreas and biliary) surgery, who can offer the full range of medical, endoscopic, and surgical options and decide on the safest timing for each. Chronic pancreatitis is managed differently and over the long term, with a focus on controlling pain, using enzyme supplements to help the body digest food and absorb nutrients, managing diabetes if it develops, and firmly addressing the underlying cause — most often by stopping alcohol. Dietary advice, sometimes with the help of a dietitian, and vitamin supplements can be important, and a smaller number of people with severe, unrelenting pain or specific complications may be considered for endoscopic procedures or surgery. Throughout, the aim is to relieve symptoms, protect nutrition, and preserve as much pancreatic function as possible.
Can pancreatitis be prevented, and when should you see a doctor?
You can lower your risk of pancreatitis by drinking alcohol in moderation or not at all, treating gallstones when advised, eating a balanced low-fat diet, and keeping conditions such as high blood fats under control. You should see a doctor for any persistent or severe upper-abdominal pain, and seek emergency care for a sudden, severe attack.
While not every case can be prevented, many can, because the two leading causes are largely avoidable or treatable. Keeping alcohol within sensible limits — or avoiding it altogether if you have already had an alcohol-related attack — is one of the most effective steps you can take. If you are known to have gallstones, following your doctor's advice about whether and when to have your gallbladder removed can prevent a first or further episode of pancreatitis. A balanced diet that is not too high in fat, maintaining a healthy weight, staying active, and keeping conditions such as raised blood triglycerides or high calcium under control all help too. These are sensible steps for general health, and they are especially worthwhile for anyone who has already had an attack or who has been told they are at higher risk. Equally important is knowing when to seek help: any severe or persistent pain in the upper abdomen, especially if it spreads to the back and comes with vomiting, deserves prompt medical assessment rather than waiting to see whether it passes. Because pancreatitis can occasionally become serious very quickly, it is always safer to be checked than to delay. It also helps to think about the days and weeks after an attack. Recovery from a mild episode is often complete, but the underlying cause must be dealt with to prevent a repeat, and follow-up appointments are used to plan any gallbladder surgery, review alcohol or triglyceride management, and make sure the pancreas has settled. If your attack was caused by gallstones, do ask your doctor about the timing of gallbladder removal, as having it done at the right point greatly lowers the chance of another attack. If you have recurring abdominal pain, known gallstones, or concerns about your risk, you can book a consultation to discuss your symptoms and the best way to protect your pancreas.
To sum up, pancreatitis is an inflammation of the pancreas that most often stems from gallstones or alcohol, usually announces itself with severe upper-abdominal pain, and needs proper medical care rather than home treatment. Most attacks settle well, but recognising the warning signs early and dealing with the cause afterwards are the keys to a good recovery and to preventing a repeat. This article is intended as general educational information and is not a substitute for a professional medical consultation. Pancreatitis ranges widely in severity, and only a qualified doctor can diagnose it and advise the treatment that is right for you. If you are experiencing worrying abdominal symptoms, have known gallstones, or want to understand your risk, please book a consultation for personalised assessment and care.