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Related Concept Videos

Chronic Inflammation: Introduction01:12

Chronic Inflammation: Introduction

Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...
Inflammatory Bowel Disease II: Ulcerative Colitis01:20

Inflammatory Bowel Disease II: Ulcerative Colitis

Ulcerative colitis is a chronic inflammatory disorder of the colon characterized by continuous mucosal inflammation that typically begins in the rectum and extends proximally in a uniform pattern. Its pathogenesis involves a complex interplay of genetic predisposition, immune dysregulation, and environmental influences. These factors converge to impair the colon’s epithelial defenses and promote an exaggerated inflammatory response against luminal contents.Breakdown of the Mucosal BarrierA...
Skin Cancer01:30

Skin Cancer

Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Appendicitis01:19

Appendicitis

Appendicitis is an acute inflammatory condition of the vermiform appendix, most commonly caused by obstruction of its lumen. The appendix is a narrow, blind-ended pouch that extends from the cecum, making it particularly prone to obstruction. Causes include fecaliths, lymphoid hyperplasia (often after viral infections), parasites, tumors, or foreign bodies. This obstruction initiates a cascade of pathological changes.Luminal Obstruction and Early InflammationAfter obstruction, normal mucosal...
Hypersensitivity Reactions: Immune-Complex Reactions01:19

Hypersensitivity Reactions: Immune-Complex Reactions

Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum sickness, a systemic...
Inflammatory Bowel Disease II: Crohn's Disease01:30

Inflammatory Bowel Disease II: Crohn's Disease

Introduction
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
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Related Experiment Video

Updated: Jun 8, 2026

Granulocyte-dependent Autoantibody-induced Skin Blistering
12:23

Granulocyte-dependent Autoantibody-induced Skin Blistering

Published on: October 12, 2012

Generalized umbilicated granuloma annulare.

A Chaudhary1, R Malkani, V Aswani

  • 1Department of Dermatology, Jaslok Hospital and Research Centre, Mumbai- 400 026, India.

Indian Journal of Dermatology, Venereology and Leprology
|October 6, 2010
PubMed
Summary
This summary is machine-generated.

Generalized umbilicated granuloma annulare, a rare skin condition, was observed in an elderly male patient. This case highlights the absence of typical associated systemic diseases like diabetes.

Related Experiment Videos

Last Updated: Jun 8, 2026

Granulocyte-dependent Autoantibody-induced Skin Blistering
12:23

Granulocyte-dependent Autoantibody-induced Skin Blistering

Published on: October 12, 2012

Area of Science:

  • Dermatology
  • Clinical Case Reports

Background:

  • Granuloma annulare is a benign inflammatory skin condition.
  • Generalized umbilicated granuloma annulare (GUGA) is a rare variant.
  • GUGA can sometimes be associated with systemic diseases, including diabetes mellitus.

Purpose of the Study:

  • To report a case of generalized umbilicated granuloma annulare in an elderly male.
  • To investigate potential associations with systemic diseases.

Main Methods:

  • Clinical observation and diagnosis of a patient presenting with GUGA.
  • Review of patient history for systemic conditions.

Main Results:

  • A case of generalized umbilicated granuloma annulare was identified in an elderly man.
  • No association with diabetes mellitus or other systemic diseases was found in this patient.

Conclusions:

  • Generalized umbilicated granuloma annulare can occur in the elderly without associated systemic disease.
  • This case broadens the clinical spectrum of GUGA presentation.