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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.
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Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
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Seborrheic dermatitis.

Ana Luisa Sobral Bittencourt Sampaio1, Angela Cristina Akel Mameri, Thiago Jeunon de Sousa Vargas

  • 1Federal University of Rio de Janeiro, Brazil. analuisasbs@gmail.com

Anais Brasileiros De Dermatologia
|January 28, 2012
PubMed
Summary
This summary is machine-generated.

Seborrheic dermatitis is a common skin condition affecting 1-3% of the US population. This review covers its immunogenetics, clinical forms, and treatments, noting increased severity in HIV-positive individuals.

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Area of Science:

  • Dermatology
  • Immunology
  • Microbiology

Background:

  • Seborrheic dermatitis is a chronic, relapsing skin disease characterized by erythema and scaling.
  • It affects 1-3% of the general population, with distinct incidence peaks in infancy and adulthood.
  • Prevalence and severity are notably higher in HIV-positive individuals and those with neurological disorders.

Purpose of the Study:

  • To provide a comprehensive literature review of seborrheic dermatitis.
  • To focus on the immunogenetic factors, clinical presentations, and therapeutic strategies for this condition.

Main Methods:

  • Literature review of existing studies on seborrheic dermatitis.
  • Analysis of data concerning pathogenesis, epidemiology, and treatment outcomes.

Main Results:

  • The pathogenesis is linked to Malassezia yeast species and the production of unsaturated fatty acids, causing non-immunogenic irritation.
  • Specific associations exist with HIV infection, neurological disorders, and other chronic diseases.
  • Treatment can be challenging, particularly in immunocompromised patients.

Conclusions:

  • Understanding the immunogenetics and clinical variations is crucial for effective management.
  • Further research may elucidate more targeted and effective treatment options for seborrheic dermatitis.