Burning Stomach Causes: Ulcer, Reflux or Neither

Burning centered in the upper abdomen, below the breastbone and above the navel, is what clinicians call epigastric pain or burning. It has four common explanations, and they are not distinguished by how the burning feels but by where it sits, what it does around meals, and what travels with it.

Location is the first fork

A burn that rises from the upper abdomen toward the chest and throat, often after meals or on lying down, is heartburn — reflux into the esophagus, covered in frequent heartburn causes. A burn that stays put in the epigastrium and does not travel upward belongs to this page. Many people have both, which is why the two questions get answered together in the same appointment.

The four usual causes

Peptic ulcer. The ACG names two causes and NIDDK repeats them: Helicobacter pylori infection and NSAIDs. NIDDK calls abdominal pain the most common symptom, occurring for some people when the stomach is empty or at night, and worsened by eating for others. Many ulcers produce no symptoms at all until they bleed.

Gastritis and gastropathy. Inflammation or damage of the stomach lining, most often from H. pylori or from long-term contact with NSAIDs, alcohol or bile reflux. NIDDK’s symptom list runs through upper abdominal pain, nausea, early fullness and loss of appetite — the whole picture is in gastritis symptoms.

Medication effect. NSAIDs are the standout, and they cause trouble whether swallowed with food or not, because the mechanism is systemic rather than local contact. Alcohol belongs here too.

Functional dyspepsia. The most common of the four and the least recognized. StatPearls describes epigastric pain syndrome — one of its three subtypes — as epigastric pain or burning with no structural disease found on imaging or endoscopy. Rome IV criteria require symptoms present for at least 3 months, with onset at least 6 months before diagnosis. Functional dyspepsia affects over 20% of the population, 10% to 40% in Western countries.

Where stress belongs in this

Not as a cause of the lining being damaged. The stomach-lining injury that carries the name “stress gastritis” is what NIDDK classifies under acute erosive gastropathy, from severe injury or burns, critical illness or sepsis — an intensive-care phenomenon, not a stressful-job one.

Psychological stress does have a documented place, and it is here: StatPearls describes anxiety and depression in functional dyspepsia driving increased amygdala activation and dysregulation of the hypothalamic-pituitary-adrenal axis, alongside visceral hypersensitivity and motility disturbance. A stomach that hurts more during a hard month is a real phenomenon with a real mechanism. It is just not inflammation.

Could it be cancer?

Almost never on its own, and the honest way to answer is with the criteria clinicians actually use rather than with reassurance.

StatPearls lists the alarm features that prompt endoscopy in someone with dyspepsia:

• Unintentional weight loss
• Difficulty swallowing (dysphagia)
• Pain on swallowing (odynophagia)
• Iron deficiency anemia
• Persistent vomiting
• A palpable mass or enlarged lymph nodes
• Family history of upper gastrointestinal cancer

The age threshold matters as much as the list. StatPearls gives the American position: routine endoscopy for patients aged 60 and over with dyspepsia, with younger patients scoped only if alarm symptoms are present. That is the number to know — 60, not 50 — because guidance published in other countries uses different cut-offs and the American one is what a US clinician will apply.

The long-run risk runs through infection rather than through symptoms. StatPearls notes that patients staged OLGA or OLGIM III or IV face considerable risk of gastric adenocarcinoma, and NIDDK lists MALT lymphoma among the complications of chronic H. pylori gastritis. Which is a practical argument for getting tested for the bacterium, not for worrying about the burn.

What to change while you sort it out

1. Stop the NSAIDs you can stop, and discuss the ones you cannot with a clinician.
2. Cut alcohol, which is on NIDDK’s list of irritants for the lining.
3. Ask about H. pylori testing. Breath, stool and blood tests exist; the ACG notes testing is done when an ulcer is diagnosed, and treatment can involve up to four medicines at once.
4. Eat smaller and earlier, which helps the fullness-and-pressure component described in gas and bloating causes.
5. Do not run indefinitely on over-the-counter acid reducers without anyone establishing why.

Go in right away for

• Black or tarry stool, or red or maroon blood mixed with stool
• Red blood in vomit, or vomit that looks like coffee grounds
• Sudden, sharp or severe abdominal pain that does not go away
• Dizziness, fainting, or a rapid pulse
• A clear change or worsening in symptoms you already knew

NIDDK lists these as reasons to call or see a doctor right away, and the first two mean bleeding that has already happened.

This content is informational and does not replace medical consultation, diagnosis, or treatment. See also gastritis symptoms and frequent heartburn causes.