Peptic Ulcer Disease

What it is

Peptic ulcer disease is an acid-related sore in the stomach or duodenum; gastric ulcers are often defined as defects larger than 5 mm. PUD happens when the lining of the upper gastrointestinal tract is damaged deeply enough to extend beyond the surface mucosa, most often in the stomach or the first part of the small intestine. The two leading causes are Helicobacter pylori infection and nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen, naproxen, and aspirin. Less common causes include severe physiologic stress in critical illness, excess acid production such as Zollinger-Ellison syndrome, Crohn disease, radiation, and some cancers.

A simple way to think about PUD is an imbalance between factors that injure the lining, mainly acid, pepsin, H. pylori, and NSAIDs, and factors that protect it, such as mucus, bicarbonate, blood flow, and prostaglandins.

Main type	Location	Typical pattern
Gastric ulcer	Stomach	Pain may occur soon after meals
Duodenal ulcer	First part of small intestine	Pain may occur 2-3 hours after meals or at night

Symptoms can include burning or gnawing pain in the upper abdomen, bloating, nausea, early fullness, or no symptoms at all. Some people first present with a complication such as bleeding.

How it works

The stomach and duodenum are normally protected from acid by a barrier of mucus, bicarbonate, tight cell junctions, and good blood supply. PUD develops when that defense is weakened or when acid-related injury increases.

H. pylori can inflame the stomach lining, alter acid secretion, and weaken mucosal defenses. Over time, this makes the tissue more vulnerable to ulcer formation. Because of this strong link, guidelines recommend testing for H. pylori in patients with peptic ulcer disease.

NSAIDs reduce prostaglandin production by blocking cyclooxygenase enzymes. Prostaglandins help maintain mucus, bicarbonate secretion, blood flow, and repair of the stomach lining. When prostaglandins fall, the lining becomes easier to injure, especially in older adults, people taking higher NSAID doses, and those also using aspirin, steroids, or blood thinners.

Smoking is associated with poorer ulcer healing and higher recurrence risk. Alcohol can irritate the stomach, but it is not usually the main cause of a true peptic ulcer.

Diagnosis / how it's measured

Diagnosis starts with symptoms, medication history, and risk factors, but symptoms alone cannot reliably confirm an ulcer. Clinicians look for NSAID use, aspirin use, prior ulcers, smoking, and possible H. pylori exposure.

Common tests include:

1. Upper endoscopy: the most direct test. It can show the ulcer, assess bleeding, and allow biopsy if needed.
2. H. pylori testing: often by urea breath test or stool antigen test. Biopsy-based testing may be done during endoscopy.
3. Blood tests: may show anemia if bleeding has occurred.
4. Stool testing for blood: may help detect gastrointestinal bleeding.

Endoscopy is especially important when there are alarm features, such as vomiting blood, black tarry stools, unexplained weight loss, anemia, trouble swallowing, persistent vomiting, or older age with new symptoms. Gastric ulcers often need follow-up to confirm healing and exclude malignancy, because some stomach cancers can resemble benign ulcers.

Evidence and uses

Treatment depends on the cause, but the main goals are to heal the ulcer, remove the trigger, and prevent complications.

Treatment approach	When used	Key point
Proton pump inhibitor (PPI)	Most patients	Reduces acid and promotes healing
H. pylori eradication therapy	If H. pylori is present	Treating the infection lowers recurrence
Stop or reduce NSAIDs	NSAID-related ulcers	Important for healing and prevention
Endoscopic therapy	Active bleeding ulcer	Can control bleeding urgently
Surgery or interventional radiology	Rare severe cases	Used for perforation, uncontrolled bleeding, or obstruction

PPIs such as omeprazole, pantoprazole, and similar medicines are the main acid-suppressing drugs used to heal ulcers. If H. pylori is found, eradication therapy is recommended. The exact antibiotic combination depends on local resistance patterns and guideline choice. In practice, clinicians often confirm that H. pylori has been cleared after treatment, because persistent infection raises the chance of recurrence.

If NSAIDs caused the ulcer, stopping the NSAID when possible is a major part of treatment. If an NSAID must be continued, a clinician may use a PPI for protection and reassess whether the NSAID is truly necessary.

Complications of PUD include:

• Bleeding, which may cause black stools, vomiting blood, weakness, or anemia
• Perforation, a hole in the stomach or duodenal wall causing sudden severe pain
• Gastric outlet obstruction, which can cause vomiting and early fullness
• Recurrence, especially if H. pylori is not eradicated or NSAID exposure continues

In India, the same core principles apply: identify H. pylori when present, review over-the-counter painkiller use carefully, and seek urgent care for bleeding symptoms. Self-medication with NSAIDs is common and can increase ulcer risk.

When to see a clinician

See a clinician if you have persistent upper abdominal pain, recurrent indigestion, nausea, or symptoms that wake you at night. Medical review is especially important if you regularly use NSAIDs, aspirin, steroids, or blood thinners, or if you have had an ulcer before.

Seek urgent care immediately for:

• Vomiting blood or material that looks like coffee grounds
• Black, tarry stools
• Sudden severe abdominal pain or a rigid abdomen
• Fainting, dizziness, or signs of significant blood loss
• Repeated vomiting or inability to keep food down

Limitations and open questions

Most peptic ulcers can be diagnosed and treated effectively, but a few areas remain less straightforward. Symptoms do not always match what is seen on endoscopy, and some ulcers are silent until they bleed. Antibiotic resistance can make H. pylori eradication harder, so the best treatment regimen may vary by region and over time.

Evidence is strong for PPIs, H. pylori treatment, and avoiding NSAIDs when possible. There is less certainty about the best strategy in every patient who must continue aspirin or NSAIDs for heart disease or chronic pain, because clinicians must balance ulcer risk against cardiovascular or pain-control needs. Not every upper abdominal pain syndrome is an ulcer, so persistent symptoms deserve proper evaluation rather than repeated self-treatment with antacids alone.