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Related Concept Videos

Skin Diseases and Disorders01:23

Skin Diseases and Disorders

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Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
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Endocarditis II: Clinical Features of Infective Endocarditis01:25

Endocarditis II: Clinical Features of Infective Endocarditis

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Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
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Diphtheria01:28

Diphtheria

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Diphtheria is an acute, toxin-mediated infectious disease that primarily affects the upper respiratory tract. It is caused by Corynebacterium diphtheriae, a Gram-positive, pleomorphic rod that lacks spore-forming capability and exhibits a characteristic club-shaped morphology under microscopic examination. While C. diphtheriae can asymptomatically colonize mucosal surfaces, clinical disease manifests only when the bacterial strain is lysogenized by a specific β-corynephage. This phage...
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Atypical Pneumonia01:14

Atypical Pneumonia

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Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease...
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Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

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Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
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Staphylococcal Skin Infections01:29

Staphylococcal Skin Infections

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Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
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Author Spotlight: Advancing Pathogen Detection and Disease Assessment in Real-Time Using M-ROSE
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Primary cutaneous nocardiosis.

Shan Jiang1, Guan Jiang1, Tie-Chi Lei1

  • 1Department of Dermatology, Renmin Hospital of Wuhan University, Wuhan, China.

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP
|December 19, 2014
PubMed
Summary

Nocardiosis, a rare bacterial infection, can present on the skin. Prompt diagnosis and treatment, like with co-trimoxazole, are key for successful outcomes in primary cutaneous nocardiosis.

Area of Science:

  • Microbiology
  • Dermatology
  • Infectious Diseases

Background:

  • Nocardiosis is a rare infection caused by gram-positive, filamentous bacteria found in soil.
  • Cutaneous manifestations are common, arising from systemic spread or direct skin inoculation.

Observation:

  • An 88-year-old male presented with acute onset of painful red papules and pustules on his forehead.
  • The clinical presentation was atypical for common forehead lesions.

Findings:

  • Diagnosis was confirmed through a combination of clinical presentation and laboratory findings.
  • The patient responded favorably to co-trimoxazole therapy, indicating primary cutaneous nocardiosis.

Implications:

  • Early recognition of primary cutaneous nocardiosis is crucial for effective management.

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  • Prompt treatment can significantly improve patient cure rates and prevent complications.