Ulcer – Causes, Symptoms, Diagnosis & Treatment

Have you ever felt a burning sensation in your stomach after skipping a meal or eating something spicy? While often dismissed as simple acidity, persistent burning pain can be a sign of a more significant condition known as an Ulcer.

In the context of PNCF (Pre-Nurture and Career Foundation) science and competitive exams like NEET, understanding the pathophysiology of the digestive system is crucial. Ulcers, specifically Peptic Ulcers, are open sores that develop on the inside lining of your stomach and the upper portion of your small intestine.

1.0What is an Ulcer?

An ulcer is essentially a breach in the continuity of the skin or mucous membrane that fails to heal. In the digestive tract, we refer to this as Peptic Ulcer Disease (PUD).

The inner lining of the stomach is protected by a thick layer of mucus. This layer defends the stomach tissue from the strong hydrochloric acid (HCl) and pepsin enzymes produced for digestion. When this protective mucus layer is worn away or the acid production becomes excessive, the acid damages the underlying tissue, causing a painful sore called an ulcer.

The Biological Mechanism

1. Aggressive Factors: Gastric acid (HCl), Pepsin, Bile salts.
2. Defensive Factors: Mucus bicarbonate barrier, Prostaglandins, mucosal blood flow.
3. Result: An ulcer forms when "Aggressive Factors" overpower the "Defensive Factors."

2.0Types of Ulcers Found in the Human Body

There are several types of ulcers, each associated with different causes and body systems:

• Peptic Ulcers: Found in the stomach (gastric ulcers) or duodenum (duodenal ulcers).
• Mouth Ulcers: Commonly known as canker sores.
• Esophageal Ulcers: Formed in the esophagus due to acid reflux.
• Venous and Arterial Ulcers: Occur in the legs due to poor blood circulation.
• Pressure Ulcers: Result from prolonged pressure on the skin, often in bedridden patients.

3.0What Causes Ulcers?

Understanding the root causes of ulcers is essential for prevention and proper treatment. While stress and spicy foods were once believed to be the primary culprits, modern medical research has identified two main causes of ulcers.

H. Pylori Infection

Helicobacter pylori (H. pylori) is a bacterium that lives in the stomach and intestinal lining and is responsible for the majority of ulcer cases. This bacteria weakens the stomach's protective mucus layer, allowing stomach acid to damage the underlying tissue. H. pylori is the leading cause of both duodenal ulcers and approximately 60% of gastric ulcers. Many people carry H. pylori without experiencing any symptoms, but when the infection becomes active, it can trigger ulcer formation and other gastrointestinal complications.

Nonsteroidal Anti-Inflammatory Drug (NSAID) Use

Long-term or regular use of nonsteroidal anti-inflammatory drugs significantly increases ulcer risk. Common NSAIDs include:

• Ibuprofen (Motrin, Advil)
• Naproxen (Aleve, Naprosyn)
• Aspirin
• Indomethacin
• Ketoprofen

These medications irritate the stomach lining and can cause ulcer formation when used consistently over extended periods. NSAID-induced ulcers account for a substantial portion of peptic ulcer disease cases.

Risk Factors that Increase Ulcer Development

While not direct causes, several factors can increase the likelihood of developing ulcers:

• Smoking - tobacco use increases stomach acid production and weakens the protective stomach lining
• Alcohol consumption - excessive alcohol can irritate the stomach and intestinal lining
• Stress - while not a direct cause, severe stress can exacerbate ulcer symptoms and slow healing
• Family history - genetic predisposition may increase susceptibility to H. pylori infection
• Age - peptic ulcer disease can occur at any age but is more common in older adults

4.0Signs and Symptoms of Ulcer

Ulcer symptoms vary depending on the severity and location of the ulcer. Some people with ulcers may experience no symptoms at all, while others suffer from significant discomfort.

Common Ulcer Symptoms

Burning stomach pain is the most prevalent symptom of ulcers. This pain typically occurs in the upper abdomen and can range from mild to severe. The pain pattern in ulcers has distinctive characteristics:

• Pain often occurs between meals or at night when the stomach is empty
• Pain may be relieved temporarily by eating food or taking antacids
• Discomfort often awakens patients from sleep
• Pain may feel like a gnawing or burning sensation in the epigastric region (upper middle abdomen)

Additional Symptoms

• Loss of appetite - reduced desire to eat due to fear of triggering pain
• Weight loss - unintentional loss of body weight resulting from decreased food intake
• Nausea and vomiting - feelings of sickness, occasionally with vomiting
• Bloating - abdominal swelling or feeling of fullness
• Heartburn - burning sensation in the chest or throat
• Dark or bloody stools - indication of gastrointestinal bleeding (serious symptom)
• Vomiting blood - sign of active bleeding in the digestive tract (medical emergency)

Severe or Alarm Symptoms

Certain symptoms indicate complications requiring immediate medical attention:

• Sudden, severe abdominal pain
• Persistent vomiting
• Bloody or black stools (melena)
• Blood in vomit (hematemesis)
• Signs of internal bleeding or perforation

5.0Diagnosis of Ulcers

Accurate diagnosis is crucial for determining the appropriate treatment approach. Healthcare providers use multiple diagnostic methods to confirm ulcer presence and identify the underlying cause.

Physical Examination and Medical History

The diagnostic process begins with a thorough physical examination and comprehensive medical history. Your healthcare provider will:

• Ask about symptoms and their duration
• Inquire about NSAID or aspirin use
• Question alcohol consumption and smoking habits
• Assess family history of ulcers or gastric diseases
• Perform abdominal examination to identify tenderness

H. Pylori Testing Methods

Since H. pylori infection is the most common ulcer cause, testing for this bacteria is typically the first diagnostic step.

Blood Tests (Serology)

Blood tests detect antibodies to H. pylori, indicating current or past infection. These tests are quick and widely available but cannot distinguish between current and previous infections.

Breath Tests (Urea Breath Test)

The urea breath test is one of the most accurate methods for detecting active H. pylori infection. The patient ingests a harmless radioactive or non-radioactive urea compound. If H. pylori is present, the bacteria break down the urea, releasing labeled carbon dioxide that is absorbed and exhaled. The labeled carbon is then measured in exhaled breath samples.

Stool Tests (Antigen Testing)
Stool antigen tests detect H. pylori antigens in fecal samples. These tests are non-invasive and effective for diagnosing active infections, particularly in patients who cannot undergo endoscopy.

Upper Endoscopy (EGD)

Esophagogastroduodenoscopy (EGD) is considered the gold standard for ulcer diagnosis. During this procedure:

• A long, flexible tube with a camera (endoscope) is inserted through the mouth into the esophagus, stomach, and duodenum
• The physician visualizes the ulcer directly and can assess its size, location, and severity
• Tissue samples (biopsies) can be collected for H. pylori testing and to rule out malignancy
• The procedure is minimally invasive and provides definitive diagnosis
• Endoscopy is particularly recommended for older patients or those with alarm symptoms

Test-and-Treat Strategy

For younger patients without alarm symptoms, healthcare providers often employ a test-and-treat strategy:

• H. pylori testing is performed (breath, stool, or serology test)
• If positive, eradication therapy is initiated
• If negative and NSAID-related, the medication is discontinued
• Patients are monitored for symptom resolution

6.0Treatment and Management

The goal of treatment is to kill the bacteria, reduce acid levels, and allow the ulcer to heal.

1. Medical Management

• Antibiotics: To kill H. pylori (e.g., Clarithromycin, Amoxicillin, Metronidazole). Usually prescribed for 14 days.
• Proton Pump Inhibitors (PPIs): These drugs block the acid-producing "pumps" in stomach cells (e.g., Omeprazole, Pantoprazole).
• H2 Blockers: Reduce the amount of acid released (e.g., Famotidine).
• Cytoprotective Agents: Coat the ulcer to protect it from further damage (e.g., Sucralfate, Bismuth subsalicylate).

2. Surgical Treatment

Rarely needed today, but used for complications like perforation or uncontrolled bleeding.

• Vagotomy: Cutting the vagus nerve to reduce acid secretion.
• Pyloroplasty: Widening the bottom of the stomach to help it empty faster.

3. Lifestyle Modifications (Diet & Habits)

• Diet: Eat smaller, more frequent meals. Avoid "trigger" foods like spicy curries, citrus fruits, and caffeine if they cause pain.
• Avoid NSAIDs: Switch to Acetaminophen (Paracetamol) for pain relief if possible.
• Stress Management: Yoga and meditation can help reduce physiological stress.

7.0Prevention of Ulcers

• Avoid long‑term or high‑dose NSAIDs; take them with food and only as prescribed.
• Quit or limit smoking and alcohol intake.
• Maintain good hygiene to prevent Helicobacter pylori infection.
• Eat a balanced diet and avoid very spicy, oily, or acidic foods.
• Manage stress with adequate sleep, exercise, and relaxation techniques.
• Follow doctor’s advice on acid‑reducing medicines if at risk or on regular NSAIDs.