Upper abdominal pain after eating: causes, red flags and when to get it checked

The upper abdomen contains the stomach, duodenum, gallbladder, pancreas and the lower gullet. Eating stimulates acid, bile and enzyme release, and moves food through, which can unmask a problem in any of these. The exact spot, timing after eating and food triggers help narrow it down.

• Functional dyspepsia: recurring upper abdominal discomfort, early fullness or bloating with no structural cause found on testing.

• Gastro-oesophageal reflux: burning behind the breastbone, a sour taste, worse lying down or bending.

• Gastritis from alcohol, NSAIDs such as ibuprofen or aspirin, or Helicobacter pylori infection.

• Peptic ulcer: gnawing pain that may ease or worsen with food, sometimes waking you at night.

• Gallstones and biliary colic: severe, steady pain under the right ribs or in the centre, lasting up to several hours after a fatty meal, sometimes spreading to the right shoulder blade.

• Pancreatitis: severe pain that bores through to the back, with vomiting, often linked to gallstones or alcohol.

• Coeliac disease, food intolerances and gastroparesis (slow stomach emptying).

• Stomach or oesophageal cancer, and a mesenteric artery problem causing pain after meals with weight loss, which are less common.

Unplanned weight loss, persistent vomiting, difficulty or pain swallowing, black or tarry stools, vomiting blood, iron deficiency anaemia, a lump in the upper abdomen, jaundice, severe constant pain or fever, and new symptoms over the age of 55 all call for urgent assessment.

• Call 999 or go to A&E: severe constant abdominal pain, vomiting blood, passing black tarry stools with dizziness, or pain with chest pressure and sweating.

• Same-day GP or NHS 111: pain with fever and yellowing of skin or eyes, or pain that is severe and does not settle.

• Urgent GP referral: weight loss, difficulty swallowing, anaemia or persistent indigestion with any red flag.

• Routine GP: recurrent mild post-meal discomfort without red flags.

The doctor asks when pain starts after meals, how long it lasts, where it spreads, relation to fatty food, alcohol, painkiller use, weight change, vomiting, stool colour, smoking and family history. They examine the abdomen for tenderness, a gallbladder sign, masses, liver size and check for anaemia and jaundice.

• Blood tests: full blood count, liver tests, amylase or lipase, coeliac screen and inflammatory markers.

• Helicobacter pylori breath or stool test: to look for infection.

• Abdominal ultrasound: the main test for gallstones.

• Gastroscopy: to look for ulcers, inflammation or tumours, with biopsies where needed.

• CT scan: if pancreatitis, a mass or vascular cause is suspected.

Eat smaller meals, avoid late heavy meals, reduce alcohol, fatty and spicy foods, and stop smoking. Avoid NSAIDs unless prescribed and necessary. Antacids can help occasional symptoms, but persistent pain needs assessment rather than long-term self-treatment.

The NHS route is a GP, with tests or an endoscopy referral, and a surgical referral for symptomatic gallstones. Private gastroenterology offers direct access to gastroscopy and ultrasound.