Chronic pancreatitis

What is chronic pancreatitis?

Chronic pancreatitis is a long-term condition where the pancreas becomes inflamed, scarred and painful. Over time, the inflammation causes irreversible damage to the pancreatic tissue, reducing its ability to produce digestive enzymes and, in some cases, insulin. This page does not cover acute pancreatitis — a sudden, potentially life-threatening episode that needs emergency care.

There are several possible causes. Alcohol is a well-known risk factor, but it is not the only cause. Smoking, genetic factors (including PRSS1 and SPINK1 variants), and autoimmune pancreatitis can also lead to chronic pancreatitis. The NHS does not quote a single UK prevalence figure.

How it is diagnosed

There is no single diagnostic test for chronic pancreatitis. Clinicians must rule out other causes of abdominal pain and may use a combination of history, blood tests, imaging (CT, MRI/MRCP), and, in some cases, endoscopic ultrasound. A diagnosis is usually made by a specialist rather than in primary care alone.

Common symptoms

• Upper abdominal pain — constant or intermittent, often worse after eating and eased by sitting forward
• Nausea and vomiting
• Diarrhoea
• Malabsorption — steatorrhoea (oily, pale, foul stools that are hard to flush)
• Bloating
• Unintentional weight loss

Symptoms can overlap with other digestive conditions, which is why specialist assessment matters. Do not self-diagnose from this list.

Complications and risks

Chronic pancreatitis increases the risk of two important complications:

• Pancreatic exocrine insufficiency (PEI) — the pancreas cannot make enough digestive enzymes. Guts UK states that 8 in 10 people with chronic pancreatitis eventually develop PEI. See our PEI page for more on PERT and monitoring.
• Diabetes — damage to insulin-producing cells can lead to type 3c (pancreatogenic) diabetes. NICE notes a lifetime diabetes risk in chronic pancreatitis as high as 80%.

This page does not recommend aspirin for chemoprevention of pancreatic cancer. Any discussion of cancer risk should be with a specialist.

What not to self-manage

Because chronic pancreatitis is a serious, progressive condition, the following are not safe to manage without specialist input:

• Do not assume the pain is “just IBS” or functional dyspepsia — persistent upper abdominal pain, especially with weight loss or steatorrhoea, needs investigation.
• Do not start pancreatic enzyme supplements from a shop or online — PERT is prescribed and titrated by a clinician or dietitian.
• Do not use a very-low-fat diet to “treat” symptoms — cutting fat hides malabsorption and can worsen nutrition; it does not reverse pancreatic damage.
• Do not ignore new or worsening symptoms — changes in pain, new diabetes, or rapid weight loss need timely review.

Overlapping conditions

Symptoms of chronic pancreatitis can overlap with:

• Pancreatic exocrine insufficiency (PEI) — a frequent consequence, not a separate condition.
• Irritable bowel syndrome (IBS) — post-prandial pain and bloating can be mistaken for IBS.
• Functional dyspepsia — upper abdominal discomfort after meals without structural disease.

These overlaps are why specialist assessment is important before accepting a label.

Community insights

Anecdotal themes:

• People often wait years for a diagnosis while symptoms are attributed to IBS or indigestion.
• PERT can make a noticeable difference to digestion and weight stability once started, but dosing needs professional titration.
• Type 3c diabetes is frequently missed or labelled as type 2 — the pancreas is the root cause, not lifestyle alone.
• Smoking cessation and alcohol reduction are discussed in clinic as important modifiers, but they do not reverse existing damage.