Peptic Ulcer Disease
Understanding open sores in the stomach and small intestine lining
Last reviewed: February 2026
🩹 What is Peptic Ulcer Disease?
Peptic ulcer disease (PUD) refers to open sores that develop on the inner lining of the stomach, upper small intestine (duodenum), or esophagus. These ulcers occur when the protective mucus layer that lines the digestive tract is eroded, allowing digestive acids to damage the tissue beneath.
The term "peptic" refers to pepsin, a digestive enzyme in the stomach. The two most common types are gastric ulcers (in the stomach) and duodenal ulcers (in the first part of the small intestine).
H. pylori
Causes 60-80% of ulcers
NSAIDs
Second most common cause
10%
Lifetime risk of developing
Curable
Most ulcers heal with treatment
📋 Types of Peptic Ulcers
| Type | Location | Pain Pattern | Notes |
|---|---|---|---|
| Gastric Ulcer | Stomach lining | Pain worsens with eating | May cause weight loss due to eating avoidance |
| Duodenal Ulcer | First part of small intestine | Pain relieved by eating, worse when hungry | More common; often causes nighttime pain |
| Esophageal Ulcer | Lower esophagus | Pain with swallowing | Usually related to severe GERD |
⚡ Causes of Peptic Ulcers
Contrary to popular belief, stress and spicy foods don't cause ulcers (though they can worsen symptoms). The two main causes are:
1. Helicobacter pylori (H. pylori) Infection
This spiral-shaped bacterium lives in the stomach's mucus layer and is responsible for 60-80% of gastric ulcers and up to 95% of duodenal ulcers.
- About 50% of the world's population carries H. pylori
- Most carriers never develop ulcers
- Spreads through contaminated food, water, or close contact
- The bacteria weaken the protective mucus barrier
- Produces enzymes and toxins that damage stomach lining
2. NSAIDs (Non-Steroidal Anti-Inflammatory Drugs)
These common pain relievers account for most ulcers not caused by H. pylori:
- Aspirin, ibuprofen (Advil, Motrin), naproxen (Aleve)
- Block prostaglandins that protect stomach lining
- Risk increases with higher doses and longer use
- Risk multiplied if combined with H. pylori infection
- Even low-dose aspirin for heart protection can cause ulcers
Other Contributing Factors
- Smoking: Increases risk, delays healing
- Alcohol: Irritates stomach lining
- Severe stress: Critical illness can cause "stress ulcers"
- Zollinger-Ellison syndrome: Rare condition causing excessive acid
- Radiation therapy
If you need to take NSAIDs regularly, talk to your doctor about taking a PPI to protect your stomach.
🔍 Symptoms
Common Symptoms
- Burning stomach pain: Most common symptom; between navel and breastbone
- Pain timing: Worse when stomach is empty (especially duodenal ulcers)
- Night pain: Waking up with stomach pain
- Temporary relief: From eating or antacids
- Bloating and fullness
- Belching
- Heartburn
- Nausea
- Food intolerance: Especially fatty foods
Silent Ulcers
Some ulcers cause no symptoms and are discovered only when complications occur. This is more common in:
- Older adults
- People taking NSAIDs (which also mask pain)
- People with diabetes (nerve damage may reduce sensation)
Warning Signs of Complications
Seek emergency care immediately for:
- Vomiting blood: Bright red or looks like coffee grounds
- Black, tarry stools (melena): Indicates bleeding
- Sudden, severe abdominal pain: May indicate perforation
- Feeling faint or lightheaded: Signs of blood loss
- Difficulty breathing
⚠️ Complications
Untreated ulcers can lead to serious, potentially life-threatening complications:
Internal Bleeding
- Can be slow (causing anemia) or rapid (life-threatening)
- Signs: vomiting blood, black stools, weakness, dizziness
- May require blood transfusion and endoscopic treatment
Perforation
- Ulcer erodes completely through the stomach or intestinal wall
- Causes sudden, severe abdominal pain
- Medical emergency requiring surgery
Obstruction (Gastric Outlet Obstruction)
- Inflammation and scarring block food passage
- Causes vomiting, early fullness, weight loss
- May require endoscopic or surgical treatment
Penetration
- Ulcer erodes into adjacent organ (pancreas, liver)
- Causes persistent pain that may radiate to back
🩺 Diagnosis
Testing for H. pylori
| Test | Method | Notes |
|---|---|---|
| Urea Breath Test | Drink solution, blow into container | Highly accurate, non-invasive; stop PPIs 2 weeks before |
| Stool Antigen Test | Stool sample analyzed | Accurate, convenient; good for confirming eradication |
| Blood Antibody Test | Blood sample | Can't distinguish current from past infection |
| Endoscopy with Biopsy | Tissue sample from stomach | Most accurate; allows visual examination too |
Visualizing the Ulcer
- Upper Endoscopy (EGD): Gold standard; allows visualization, biopsy, and treatment
- Barium X-ray: Less commonly used; drink contrast liquid, take X-rays
Endoscopy is recommended for anyone with "alarm" symptoms (bleeding, weight loss, difficulty swallowing) and for people over 55 with new symptoms, to rule out cancer.
💊 Treatment
Treatment Goals
- Eliminate H. pylori (if present)
- Reduce acid production to allow healing
- Protect the stomach lining
- Avoid agents that caused the ulcer
H. pylori Eradication Therapy
Triple or quadruple therapy for 10-14 days:
- PPI: Omeprazole, lansoprazole, or similar (twice daily)
- Clarithromycin: 500 mg twice daily
- Amoxicillin: 1000 mg twice daily (or metronidazole if allergic)
- Bismuth subsalicylate: Added in quadruple therapy
Complete the full course of antibiotics even if you feel better. Incomplete treatment leads to antibiotic resistance and treatment failure.
Acid-Reducing Medications
| Type | Examples | Duration |
|---|---|---|
| PPIs | Omeprazole, Pantoprazole, Esomeprazole | 4-8 weeks (duodenal) or 8-12 weeks (gastric) |
| H2 Blockers | Famotidine, Ranitidine | Can be used as alternative or adjunct |
| Antacids | Tums, Maalox | For symptom relief; not for healing |
For NSAID-Induced Ulcers
- Stop the NSAID if possible
- PPIs are treatment of choice
- If NSAIDs must continue, add PPI protection
- Consider COX-2 selective NSAIDs (less GI risk)
- Test and treat H. pylori before starting chronic NSAID therapy
Follow-Up
- Confirm H. pylori eradication with breath or stool test 4+ weeks after treatment
- Repeat endoscopy for gastric ulcers to ensure healing and rule out cancer
- Duodenal ulcers don't usually need follow-up endoscopy if symptoms resolve
🛡️ Lifestyle and Prevention
During Healing
- Take medications exactly as prescribed
- Avoid NSAIDs (use acetaminophen for pain)
- Quit smoking (delays healing)
- Limit or avoid alcohol
- Eat regular meals (don't skip)
- Avoid foods that worsen your symptoms
- Manage stress
Prevention
- Limit NSAID use: Use the lowest dose for shortest time needed
- Protect stomach if NSAIDs needed: Take with food; add PPI
- Don't smoke
- Limit alcohol
- Wash hands: Reduces H. pylori transmission
- Properly prepare food: Cook thoroughly, wash produce
If you need pain relief, acetaminophen (paracetamol/Tylenol) doesn't affect the stomach lining and is a good alternative to NSAIDs for many types of pain.
❓ Frequently Asked Questions
Can ulcers come back after treatment?
Yes, ulcers can recur. If H. pylori wasn't completely eradicated, if you continue using NSAIDs without stomach protection, or if you smoke, recurrence is more likely. Successfully treating H. pylori reduces recurrence from about 60% to less than 5%. Lifestyle modifications and avoiding known causes help prevent recurrence.
Do I need to follow a special diet?
There's no specific "ulcer diet," but avoiding foods that worsen your symptoms makes sense. Common irritants include spicy foods, acidic foods, caffeine, and alcohol. Eating regular meals is helpful—don't skip meals. Once healed, most people can gradually return to their normal diet.
Can milk help heal ulcers?
This is a myth. While milk may provide temporary relief, it actually stimulates acid production, which can worsen ulcers. The calcium and protein in milk both trigger acid release. Modern ulcer treatment relies on medications that effectively heal ulcers, not dietary remedies.
How do I know if my ulcer is healing?
Symptoms typically improve within days of starting treatment, though complete healing takes weeks. Your doctor may recommend a follow-up endoscopy for gastric ulcers to confirm healing. For H. pylori, a breath or stool test 4+ weeks after completing antibiotics confirms eradication.
Can ulcers cause cancer?
Most peptic ulcers don't become cancerous. However, chronic H. pylori infection is a risk factor for stomach cancer (though the absolute risk is low). Gastric ulcers should always be biopsied and followed up to ensure they're not cancerous. Duodenal ulcers very rarely become cancerous.