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Peptic Ulcer Disease I: Introduction

Peptic Ulcer Disease I: Introduction

Peptic Ulcer Disease (PUD) is characterized by mucosal excavation in the esophagus, stomach, pylorus, or duodenum. It can manifest as acute or chronic based on the extent and duration of mucosal involvement.
An acute ulcer, marked by superficial erosion and minimal inflammation, swiftly resolves upon identifying and addressing the underlying cause. In contrast, a chronic ulcer persists, potentially eroding through the muscular wall and forming fibrous tissue.
Peptic ulcers can also be...

Peptic Ulcer Disease I: Introduction

Peptic Ulcer Disease I: Introduction

Peptic ulcer disease (PUD) involves breaks in the gastrointestinal tract's mucosal lining, primarily in the stomach and duodenum, with less frequent occurrences in the lower esophagus or near the pylorus.Ulcers can be acute or chronic. Acute ulcers are short-lived with minimal inflammation and heal quickly after the irritant is removed. Chronic ulcers persist, may recur, and often cause scarring due to ongoing tissue damage. Superficial erosions affect only the mucosal layer and are called...

Peptic Ulcer Disease II: Pathophysiology

Peptic Ulcer Disease II: Pathophysiology

Peptic ulcer disease develops when protective mechanisms of the gastrointestinal mucosa are overwhelmed by harmful factors, leading to localized erosions in the stomach or proximal duodenum. The main causes are Helicobacter pylori infection and chronic use of nonsteroidal anti-inflammatory drugs (NSAIDs).Helicobacter pylori–Induced InjuryBacterial Adaptation and Colonization:H. pylori is a spiral, Gram-negative bacterium adapted to the acidic stomach. and transmitted through oral-oral or...

Peptic Ulcer Disease II: Pathophysiology

Peptic Ulcer Disease II: Pathophysiology

Peptic Ulcer Disease (PUD) is characterized by the development of ulcers in the stomach or duodenal mucosa. Its pathophysiology is complex, involving a balance between damaging and protective elements.
Damaging agents such as Helicobacter pylori, gastric acid, pepsin, and nonsteroidal anti-inflammatory drugs (NSAIDs) can weaken the mucosal defense, allowing hydrogen ions to infiltrate back and harm epithelial cells.

Pathophysiology of Peptic Ulcer Disease: Mucosal Defense Factors

Pathophysiology of Peptic Ulcer Disease: Mucosal Defense Factors

Peptic ulcer disease, commonly called PUD, represents a multifaceted condition characterized by disruptions in the lining of the gastrointestinal (GI) tract. Central to the protection of the gastrointestinal lining is the mucosal-bicarbonate barrier. This physiological defense mechanism is a formidable shield against the corrosive effects of gastric acid and pepsin secretion in the stomach. Its role is pivotal in maintaining the structural integrity of the stomach's inner lining. Bicarbonate,...

Peptic Ulcer

Peptic Ulcer

Peptic ulcers are erosive lesions of the gastric or duodenal lining, most commonly caused by Helicobacter pylori infection. This Gram-negative, helical bacterium has adapted to survive the stomach’s acidic environment by producing urease, which converts urea into ammonia and carbon dioxide. The ammonia neutralizes gastric acid in the bacterium’s immediate environment, allowing colonization of the gastric mucosa. H. pylori attaches to mucus-secreting epithelial cells, penetrates the mucus...

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Related Experiment Video

Updated: May 29, 2026

Establishment and Evaluation of a Risk Prediction Model for Pathological Escalation of Gastric Low-Grade Intraepithelial Neoplasia

Establishment and Evaluation of a Risk Prediction Model for Pathological Escalation of Gastric Low-Grade Intraepithelial Neoplasia

Published on: February 16, 2024

Peptic ulcer disease.

¹Department of Family Medicine & Geriatrics, Susan Samueli Center of Integrative Medicine, University of California, Irvine, 101 The City Drive, Building 200, #512, Orange, CA 92868, USA. winajm@uci.edu

|August 30, 2011

Summary

Peptic ulcer disease (PUD), often caused by NSAIDs, frequently affects older adults. Symptoms like nighttime pain or non-specific epigastric issues, nausea, and vomiting are common in this demographic.

Area of Science:

Gastroenterology
Internal Medicine
Pharmacology

Background:

Peptic ulcer disease (PUD) is a significant health concern, primarily linked to the extensive use of low-dose aspirin and nonsteroidal anti-inflammatory drugs (NSAIDs).
The condition disproportionately affects elderly patients, particularly those with existing comorbidities.

Purpose of the Study:

To elucidate the typical presentation and key characteristics of peptic ulcer disease in the elderly population.
To highlight the common symptoms that may deviate from classic presentations in older adults with PUD.

Main Methods:

Review of clinical data and patient presentations related to peptic ulcer disease.
Analysis of symptom patterns in elderly patients compared to younger demographics.

Related Experiment Videos

Last Updated: May 29, 2026

Establishment and Evaluation of a Risk Prediction Model for Pathological Escalation of Gastric Low-Grade Intraepithelial Neoplasia

Establishment and Evaluation of a Risk Prediction Model for Pathological Escalation of Gastric Low-Grade Intraepithelial Neoplasia

Published on: February 16, 2024

Main Results:

A significant proportion of duodenal ulcer patients (two-thirds) experience nocturnal pain, typically between 12 a.m. and 3 a.m.
One-third of gastric ulcer patients also report similar nighttime pain.
Older adults (over 80 years) with PUD frequently present with atypical symptoms, including epigastric pain, nausea, and vomiting, rather than classic abdominal pain.

Conclusions:

The widespread use of NSAIDs contributes significantly to peptic ulcer disease, especially in the elderly.
Healthcare providers should be aware of the atypical symptom presentation of PUD in older adults to ensure timely diagnosis and management.