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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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Accessory Structures of the Skin: Sebaceous Glands01:21

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A sebaceous gland is a type of oil gland found almost all over the skin ( except palms and soles) and helps lubricate and waterproof the skin and hair. Most sebaceous glands are associated with hair follicles. They generate and excrete sebum, a mixture of lipids, onto the skin surface, thereby naturally lubricating the dry and dead layer of keratinized cells of the stratum corneum, keeping it pliable.
These glands that produce the oils on the skin and hair are holocrine glands. The mature...
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Skin Cancer01:30

Skin Cancer

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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.
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Pulmonary Tuberculosis I01:29

Pulmonary Tuberculosis I

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Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
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Papillary Dermis01:11

Papillary Dermis

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Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
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Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

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Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
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Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
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Leprosy on the scalp.

Raila de Brito Macedo1, Tárcio Santos1,2, Paulyane Bezerra Sampaio Ramos1

  • 1Centro de Estudos Dermatológicos do Recife (CEDER) - Recife (PE), Brazil.

Anais Brasileiros De Dermatologia
|March 17, 2017
PubMed
Summary
This summary is machine-generated.

Leprosy, a chronic infection by Mycobacterium leprae, typically affects skin and nerves. This case highlights a rare instance of leprosy involving the scalp, challenging typical presentations.

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Area of Science:

  • Dermatology
  • Infectious Diseases
  • Microbiology

Background:

  • Leprosy is a chronic infectious disease caused by Mycobacterium leprae.
  • Mycobacterium leprae demonstrates a strong predilection for skin and peripheral nerves.
  • The scalp's anatomical structure is generally considered unfavorable for Mycobacterium leprae development.

Observation:

  • This report details a rare case of leprosy manifesting with scalp involvement.
  • The patient presented with clinical signs of leprosy affecting the scalp region.
  • Diagnostic investigations confirmed Mycobacterium leprae infection in the scalp.

Findings:

  • Scalp involvement in leprosy is an uncommon clinical presentation.
  • The case challenges the established understanding of Mycobacterium leprae's tropism.
  • This finding expands the spectrum of potential leprosy manifestations.

Implications:

  • Increased awareness of atypical leprosy presentations is warranted for clinicians.
  • Diagnostic protocols may need to consider scalp examination in endemic areas.
  • Further research into the factors facilitating scalp colonization by Mycobacterium leprae is needed.