Related Experiment Videos
Buruli ulcer
Manuela Boleira1, Omar Lupi, Linda Lehman
1General Polyclinic of Rio de Janeiro, RJ, Brazil.
Anais Brasileiros De Dermatologia
|August 3, 2010
Summary
Buruli ulcer, caused by Mycobacterium ulcerans, is a significant infectious disease. Early diagnosis and treatment are crucial for preventing disability, especially with new cases emerging in Brazil.
Area of Science:
- Infectious Diseases
- Dermatology
- Mycobacteriology
Background:
- Buruli ulcer is the third most common mycobacterial infection globally, following tuberculosis and leprosy.
- Caused by Mycobacterium ulcerans, it affects over 30 countries, primarily in tropical and subtropical regions.
- The epidemiology of Buruli ulcer remains incompletely understood.
Purpose of the Study:
- To highlight the importance of Buruli ulcer diagnosis for Brazilian dermatologists.
- To underscore the need for increased physician awareness regarding this atypical mycobacteriosis.
- To emphasize the critical role of early detection and treatment in managing Buruli ulcer.
Main Methods:
- This study is a review of the clinical and epidemiological aspects of Buruli ulcer.
- It synthesizes existing knowledge on clinical manifestations and geographical distribution.
- Focuses on the implications of recent autochthonous cases in Brazil.
Main Results:
- Clinical presentations range from nodules and edema to plaques, with large limb ulcers being most typical.
- Buruli ulcer diagnosis may be overlooked in non-endemic or less-studied regions.
- Autochthonous cases in Brazil necessitate greater clinical vigilance.
Conclusions:
- Physician education on Buruli ulcer is essential for timely diagnosis.
- Prompt treatment and disability prevention measures are key to favorable outcomes.
- Understanding Buruli ulcer's epidemiology is vital for public health strategies.
Related Concept Videos
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...
Inflammatory Bowel Disease I: Ulcerative Colitis
Introduction
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
Peptic Ulcer Disease III: Clinical Manifestations and Complications
Duodenal UlcersDuodenal ulcers are the most common form of peptic ulcer disease, presenting with chronic, intermittent epigastric pain. Pain typically appears 2–3 hours after meals, especially when the stomach is empty, often waking patients at night. It is characteristically relieved by food or antacids (“pain–food–relief”). Some patients remain asymptomatic until complications like bleeding or perforation emerge, particularly with NSAID or anticoagulant use.Gastric UlcersGastric ulcers share...
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...
Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies
Peptic ulcer disease (PUD) presents with diverse symptoms depending on the location and severity of the ulcer. Clinical manifestations of peptic ulcer include dull pain and a burning sensation in the mid-epigastric region.
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
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...